Consequently, N 2 O should have a higher boiling point. A) SF4 B) XeF4 C) NF3 D) SF6 E) PF5
Ans:E Category:Medium Section:10.1
14. Of the following, __________ has the highest boiling point. Consequently, we expect intermolecular interactions for n-butane to be stronger due to its larger surface area, resulting in a higher boiling point. 8 4 J / g C
A ) 2 , 5 7 0 k J B ) 1 , 0 8 6 k J C ) 1 5 7 . On average, the two electrons in each He atom are uniformly distributed around the nucleus. (1) H2S (2) BCl3 (3) PH3 (4) SF4
A) (2) and (4) B) (2) and (3) C) (1) and (2) D) (3) and (4) E) (1) and (4)
Ans:A Category:Medium Section:9.9
37. The number of lone electron pairs in the N2 molecule is ___. A) SrO B) NaF C) CaBr2 D) CsI E) BaSO4
Ans:A Category:Medium Section:9.3
14. The substance with the weakest forces will have the lowest boiling point. Vapor Pressure and Water: How Can You Determine If a Molecule Has a Higher Boiling Point? Compounds such as HF can form only two hydrogen bonds at a time as can, on average, pure liquid NH3. . The one compound that can act as a hydrogen bond donor, methanol (CH3OH), contains both a hydrogen atom attached to O (making it a hydrogen bond donor) and two lone pairs of electrons on O (making it a hydrogen bond acceptor); methanol can thus form hydrogen bonds by acting as either a hydrogen bond donor or a hydrogen bond acceptor. Write a Lewis structure for SO3 that expands the octet to minimize formal charge and if necessary places negative formal charges on the most electronegative atom(s). d. cannot be liquefied above its triplepoint D) temperature is greater than room temperature. Which of the atoms listed below is the most electronegative? In which of the following molecules is hydrogen bonding likely to be the most significant component of the total intermolecular forces? The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. h|g CJ UVaJ "j h|g h|g B*EHUph jm5(M Ans:
Category:Medium Section:9.6
43. E) hydrogen bonding. Thus a substance such as \(\ce{HCl}\), which is partially held together by dipoledipole interactions, is a gas at room temperature and 1 atm pressure. C) molecular crystal. Small nonpolar molecules Predict the melting and boiling points for methylamine (CH 3 NH 2). d. is highly cohesive A polar covalent bond would form in which one of the following pairs of atoms? According to VSEPR theory, which one of the following molecules should be nonlinear? Which of the following pairs of elements would be most likely to form an ionic compound? %, %, %, ] Of the following substances, only __________ has London dispersion forces as its only intermolecular force. b. a long range repeating pattern of atoms, molecules, or ions, The unit cell with all sides the same length and all angles equal to 90 that has lattice points only at the corners is called __________. A) NH3 B) CCl4 C) CO2 D) SF4 E) PCl5
Ans:B Category:Medium Section:10.1
17. c. They flow and are compressible. Ans:
Category:Medium Section:9.7
44. A) Cl C l B ) S i S i C ) C a C l D ) C r B r E ) P C l
A n s : E C a t e g o r y : M e d i u m S e c t i o n : 9 . D) surface tension. The area of the welded member shown is composed of a 4-inch-diameter standard weight pipe and four angles L 212212142 \frac{1}{2} \times 2 \frac{1}{2} \times \frac{1}{4}22122141. A) CH3OCH3 B) CH3CH2CH3 C) CH3CHO D) CH3OH E) CH3CN. The Lewis dot symbol for the calcium ion is
A) EMBED Equation.BREE42+ B) C a C ) E M B E D E q u a t i o n . Thus far, we have considered only interactions between polar molecules. Ans:True Category:Easy Section:10.5
30. a. heat of fusion, heat of condensation d. They assume both the volume and the shape of their containers. Which of the following is not an endothermic process? Other factors must be considered to explain why many nonpolar molecules, such as bromine, benzene, and hexane, are liquids at room temperature; why others, such as iodine and naphthalene, are solids. Complete this sentence: The PCl5 molecule has
A) nonpolar bonds, and is a nonpolar molecule. Write the Lewis dot symbol for the sulfide ion. Of the given pair of compounds, which would have the higher boiling point? d. heat of freezing(solidification),heatofvaporization Given the following liquids and their boiling points, which has the highest vapor pressure at its normal boiling point? The effect is most dramatic for water: if we extend the straight line connecting the points for H2Te and H2Se to the line for period 2, we obtain an estimated boiling point of 130C for water! A) viscosity B) surface tension C) density D) specific heat E) triple point
Ans:B Category:Medium Section:11.3
16. 1and8 (1) Na+ (2) CH3COOH (3) C2H6 (4) CH3NH2
A) (1) and (2) B) (1) and (3) C) (2) and (3) D) (2) and (4) E) (3) and (4)
Ans:D Category:Medium Section:11.2
13. For example, it requires 927 kJ to overcome the intramolecular forces and break both OH bonds in 1 mol of water, but it takes only about 41 kJ to overcome the intermolecular attractions and convert 1 mol of liquid water to water vapor at 100C. s p e c i f i c h e a t o f i c e : 2 . Of the given pair of compounds, which would have the higher boiling point? A) 4 B) 5 C) 6 D) 7 E) 8
Ans:E Category:Medium Section:9.4
28. A. B R E E 4 2 C ) S 2 D ) E M B E D E q u a t i o n . A) Se B) Sb C) K D) Ga E) Fe
Ans:A Category:Medium Section:9.5
18. Polar covalent bonds behave as if the bonded atoms have localized fractional charges that are equal but opposite (i.e., the two bonded atoms generate a dipole). Butter melts over a range of temperature, rather than with a sharp melting point. a. water boils at a lower temperature at high altitude than at low altitude All molecules, whether polar or nonpolar, are attracted to one another by London dispersion forces in addition to any other attractive forces that may be present. Indicate all the types of intermolecular forces of attraction in C2H6(g). According to the VSEPR theory, the molecular geometry of ammonia is
A) linear B) trigonal planar C) bent D) tetrahedral E) trigonal pyramidal
Ans:E Category:Medium Section:10.1
12. h|g h|g B*EHUph jj5(M A) O B) S C) Na D) C E) N
Ans:B Category:Easy Section:9.9
34. very soft b. body-centered cubic The Lewis dot symbol for the chloride ion is
A) EMBED Equation.BREE4 B) EMBED Equation.BREE4 C) EMBED Equation.BREE4 D) EMBED Equation.BREE4 E) Cl
Ans:B Category:Medium Section:9.2
11. Ans:E Category:Medium Section:10.1
6. c. high heats of fusion and vaporization D) polar bonds, but is a nonpolar molecule. Mark each of the following statements as TRUE or FALSE. c. not related Asked for: formation of hydrogen bonds and structure. Because each water molecule contains two hydrogen atoms and two lone pairs, a tetrahedral arrangement maximizes the number of hydrogen bonds that can be formed. Methane and its heavier congeners in group 14 form a series whose boiling points increase smoothly with increasing molar mass. Which one of the following substances is expected to have the highest boiling point? When heat energy is applied to a liquid, the molecules have increased kinetic energy, and they vibrate more. A ) 4 2 0 J B ) 2 , 9 0 0 J C ) 6 , 2 6 1 J D ) 6 3 k J E ) 7 . Larger atoms tend to be more polarizable than smaller ones, because their outer electrons are less tightly bound and are therefore more easily perturbed. b. directly proportional to one another Ans:C Category:Medium Section:11.2
5. 0 2 k J / m o l s p e c i f i c h e a t o f w a t e r : 4 . Hence dipoledipole interactions, such as those in Figure \(\PageIndex{1b}\), are attractive intermolecular interactions, whereas those in Figure \(\PageIndex{1d}\) are repulsive intermolecular interactions. On average, however, the attractive interactions dominate. Let's start with some basics. Map: Chemistry - The Central Science (Brown et al. The resulting open, cagelike structure of ice means that the solid is actually slightly less dense than the liquid, which explains why ice floats on water, rather than sinks. Because the electron distribution is more easily perturbed in large, heavy species than in small, light species, we say that heavier substances tend to be much more polarizable than lighter ones. Because ice is less dense than liquid water, rivers, lakes, and oceans freeze from the top down. The expansion of water when freezing also explains why automobile or boat engines must be protected by antifreeze and why unprotected pipes in houses break if they are allowed to freeze. The geometry of the SF4 molecule is
A) tetrahedral. C 3. The force of attraction that exists between Na+ and H2O is called a(n) __________ interaction. B) trigonal planar. A) NCl3 B) BaCl2 C) CO D) SO2 E) SF4
Ans:B Category:Easy Section:9.2
4. Br2. What fraction of the volume of each corner atom is actually within the volume of a face-centered cubic unit cell? 0 g o f i c e a t 1 0 . In this section, we explicitly consider three kinds of intermolecular interactions. A) CsOH B) NF3 C) Sr(NO3)2 D) CaO E) LiF
Ans:B Category:Easy Section:9.4
8. The reason that the boiling point is predictable is because it is controlled by the strength of the bonds holding the atoms in the molecule together, and the amount of kinetic energy to break those bonds is measurable and relatively reliable. All molecules have kinetic energy; they are vibrating. A) 0 B) +1 C) 1 D) 2 E) +2
Ans:C Category:Difficult Section:9.7
32. Which one of the following molecules has an atom with an expanded octet? 8 0 k J / m o l . Imagine the implications for life on Earth if water boiled at 130C rather than 100C. Write a Lewis structure for SO3 that obeys the octet rule, showing all non-zero formal charges, and give the total number of resonance structures for SO3 that obey the octet rule. Because the electrons are in constant motion, however, their distribution in one atom is likely to be asymmetrical at any given instant, resulting in an instantaneous dipole moment. Thus, London dispersion forces are responsible for the general trend toward higher boiling points with increased molecular mass and greater surface area in a homologous series of compounds, such as the alkanes (part (a) in Figure \(\PageIndex{4}\)). 0 9 J / g C DH f u s = 6 . C) polar bonds, and is a polar molecule. B) polarizability. Which one of the following is most likely to be a covalent compound? Arrange 2,4-dimethylheptane, Ne, CS2, Cl2, and KBr in order of decreasing boiling points. What condition must exist for a liquid to boil? Chemistry Dashboard - Ammonia: How Can You Determine If a Molecule Has a Higher Boiling Point, 10842 Rubidium nitrate: How Can You Determine If a Molecule Has a Higher Boiling Point, the presence of a longer chain of atoms in the molecule (more polarizable), functional groups that are more exposed (that is, at the end of a chain, rather than in the middle), the polarity ranking of functional groups: Amide>Acid>Alcohol>Ketone or Aldehyde>Amine>Ester>Alkane. a. London-dispersion forces b. ion-dipole attraction c. ionic bonding d. dipole-dipole attraction e. hydrogen-bonding, Elemental iodine (I2) is a solid at room temperature. According to the VSEPR theory, which one of the following species should be linear? Because the boiling points of nonpolar substances increase rapidly with molecular mass, C60 should boil at a higher temperature than the other nonionic substances. Identify the most significant intermolecular force in each substance. A) D)
B) E)
C)
Ans:E Category:Medium Section:9.6
31. Which of the following solids would have the highest melting point? A) Li B) Cs C) P D) As E) Ge
Ans:C Category:Medium Section:9.5
17. C.A hydrogen bond can be thought of as a very strong dipole-dipole interaction. Arrange GeH4, SiCl4, SiH4, CH4, and GeCl4 in order of decreasing boiling points. b. is highly viscous Which of the following solids would have the lowest melting point? C) Water can form hydrogen bonds. b. water boils at a higher temperature at high altitude than at low altitude The reason for this trend is that the strength of London dispersion forces is related to the ease with which the electron distribution in a given atom can be perturbed. A) ethanol, bp = 78C C) water, bp = 100C
B) methanol, bp = 65C D) acetone, bp = 56C
Ans:C Category:Medium Section:11.8
11. h|g CJ UVaJ "j h|g h|g B*EHUph jf5(M The vapor pressure of a liquid in a closed container depends upon
A) the amount of liquid. The boiling point of propane is 42.1 C, the boiling point of dimethylether is 24.8 C, and the boiling point of ethanol is 78.5 C. The heat capacity of liquid water is 4.18 J/gC and the heat of vaporization is 40.7 kJ/mol. Within a series of compounds of similar molar mass, the strength of the intermolecular interactions increases as the dipole moment of the molecules increases, as shown in Table \(\PageIndex{1}\). The molecules within the liquid are attracted to each other. Why do strong intermolecular forces produce such anomalously high boiling points and other unusual properties, such as high enthalpies of vaporization and high melting points? e. 2and4, The predominant intermolecular force in CaBr2 is __________. The boiling point occurs at a very specific temperature for each molecule. A) KF B) CaCl2 C) SF4 D) Al2O3 E) CaSO4
Ans:C Category:Easy Section:9.4
7. 5
2 1 . 2
1 2 . D) bent. Ans: dispersion
Category:Medium Section:11.2
33. Which of the following ionic solids would have the largest lattice energy? They need more energy to escape to the gas phase, so the larger molecule has the higher boiling point. Although hydrogen bonds are significantly weaker than covalent bonds, with typical dissociation energies of only 1525 kJ/mol, they have a significant influence on the physical properties of a compound. Use the graph of vapor pressure to determine the normal boiling point of O2. A) 0 lone pairs, linear D) 3 lone pairs, bent
B) 1 lone pair, bent E) 3 lone pairs, linear
C) 2 lone pairs, bent
Ans:E Category:Medium Section:10.1
3. d. not strong enough to keep molecules from moving past each other a. London-dispersion forces b. ion-dipole forces c. ionic bonding d. dipole-dipole forces (Despite this seemingly low value, the intermolecular forces in liquid water are among the strongest such forces known!) Of the given pair of compounds, which would have the higher boiling point? A) KI B) KBr C) KCl D) KF
Ans:A Category:Medium Section:9.3
Chapter 10: (2 points each)
1. CH3Cl or CH4
Ans: CH3Cl
Category:Medium Section:11.2
39. Indicate all the types of intermolecular forces of attraction in SO2(l). B) Water has an unusually high boiling point. d. the same thing Hydrogen bonds are especially strong dipoledipole interactions between molecules that have hydrogen bonded to a highly electronegative atom, such as O, N, or F. The resulting partially positively charged H atom on one molecule (the hydrogen bond donor) can interact strongly with a lone pair of electrons of a partially negatively charged O, N, or F atom on adjacent molecules (the hydrogen bond acceptor). The strengths of London dispersion forces also depend significantly on molecular shape because shape determines how much of one molecule can interact with its neighboring molecules at any given time. A) ethanol, bp = 78C. a. Viscosity b. To describe the intermolecular forces in liquids. Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. dimethyl sulfoxide (boiling point = 189.9C) > ethyl methyl sulfide (boiling point = 67C) > 2-methylbutane (boiling point = 27.8C) > carbon tetrafluoride (boiling point = 128C). A) 4 B) 5 C) 6 D) 7 E) 8
Ans:C Category:Medium Section:9.4
27. A bonding molecular orbital is of lower energy (more stable) than the atomic orbitals from which it was formed. E) The vapor pressure of each of the liquids at its normal boiling point would be the same. The net effect is that the first atom causes the temporary formation of a dipole, called an induced dipole, in the second. In general, however, dipoledipole interactions in small polar molecules are significantly stronger than London dispersion forces, so the former predominate. Which one of the following derivatives of ethane has the highest boiling point? W X l m n o w x whVw "j! These interactions become important for gases only at very high pressures, where they are responsible for the observed deviations from the ideal gas law at high pressures. The effect of increasing the pressure is to raise the boiling point. h|g CJ UVaJ h>* B*ph h' h>* h>* B*OJ QJ ^J ph j h>* B*Uph "j h|g h|g B*EHUph H I ] ^ _ ` b B D F H L ` d yjXS h>* H*"j) h|g h|g B*EHUph jr5(M Consequently, N2O should have a higher boiling point. Which of the elements listed below has the greatest electronegativity? A) Cl and I B) Al and K C) Cl and Mg D) C and S E) Al and Mg
Ans:C Category:Easy Section:9.2
5. Indicate all the types of intermolecular forces of attraction in SF6(g). Which of the following solids would have the highest melting point? Explain your reasoning. Which one of the following is most likely to be an ionic compound? 0 k J / m o l . Indicate all the types of intermolecular forces of attraction in HCl(g). A molecule with a double-bonded oxygen, like butanone (C 4 H 8 O) is peaked in the middle where the oxygen is bonded to the carbon chain. How many sigma and pi bonds are contained in the following DEET molecule? The hydrogen-bonded structure of methanol is as follows: Considering CH3CO2H, (CH3)3N, NH3, and CH3F, which can form hydrogen bonds with themselves? e. hydrogen bonding, . Liquids boil when the molecules have enough thermal energy to overcome the intermolecular attractive forces that hold them together, thereby forming bubbles of vapor within the liquid. h|g h|g B*EHUph jo5(M KBr (1435C) > 2,4-dimethylheptane (132.9C) > CS2 (46.6C) > Cl2 (34.6C) > Ne (246C). 14 (mw=86) has a boiling point of 68. a. monoclinic a. London-dispersion forces b. ion-dipole attraction c. dipole-dipole attractions d. ion-ion interactions e. none of the above, The predominant intermolecular force in (CH3)2NH is __________. The overall order is thus as follows, with actual boiling points in parentheses: propane (42.1C) < 2-methylpropane (11.7C) < n-butane (0.5C) < n-pentane (36.1C). a. Ionic b. Molecular c. Metallic The total number of bonding electrons in a molecule of formaldehyde (H2CO) is
A) 3 B) 4 C) 6 D) 8 E) 18
Ans:D Category:Medium Section:9.6
29. b. Of the following, __________ should have the highest critical temperature. A) NaI B) NaF C) MgO D) MgCl2 E) KF
Ans:C Category:Medium Section:9.3
50. The number of lone electron pairs in the NO2 ion is ___. A) 35.1 kJ/mol
B) 13.5 kJ/mol
C) +13.5 kJ/mol
D) 35.1 kJ/mol
E) Not enough information is given to answer the question. Which one of the following is most likely to be a covalent compound? e. melts rather than sublimes under ordinary conditions, Crystalline solids differ from amorphous solids in that crystalline solids have_____ Which of the responses includes all of the following that can form hydrogen bonds with water molecules? The ease of deformation of the electron distribution in an atom or molecule is called its polarizability. b. heat of fusion, heat of vaporization D) the temperature. The three compounds have essentially the same molar mass (5860 g/mol), so we must look at differences in polarity to predict the strength of the intermolecular dipoledipole interactions and thus the boiling points of the compounds. a. low vapor pressure As a result, it is relatively easy to temporarily deform the electron distribution to generate an instantaneous or induced dipole. Molecules in liquids are held to other molecules by intermolecular interactions, which are weaker than the intramolecular interactions that hold the atoms together within molecules and polyatomic ions. a. C2Br6 b. C2F6 c. C2I6 d. C2Cl6 e. C2H6, What is the predominant intermolecular force in CBr4? 1 8 J / g C ; DH f u s = 6 . Given the following liquids and their boiling points, which has the highest vapor pressure at its normal boiling point? d. 2and2 London dispersion forces are due to the formation of instantaneous dipole moments in polar or nonpolar molecules as a result of short-lived fluctuations of electron charge distribution, which in turn cause the temporary formation of an induced dipole in adjacent molecules; their energy falls off as 1/r6. Although this molecule does not experience hydrogen bonding, the Lewis electron dot diagram and. At high altitudes, the atmospheric pressure is lower. Potassium crystallizes in a body-centered cubic lattice. c. 1 and 1 The heat of sublimation is equal to the sum of the heat of vaporization and the heat of freezing, true or false? Because the boiling points of nonpolar substances increase rapidly with molecular mass, C 60 should boil at a higher temperature than the other nonionic substances. C12 H26 molecules are held together by __________. b. sublimesratherthanmeltsunderordinary conditions The answer lies in the highly polar nature of the bonds between hydrogen and very electronegative elements such as O, N, and F. The large difference in electronegativity results in a large partial positive charge on hydrogen and a correspondingly large partial negative charge on the O, N, or F atom. Ans: dipole-dipole and dispersion
Category:Medium Section:11.2
36. In the structure of ice, each oxygen atom is surrounded by a distorted tetrahedron of hydrogen atoms that form bridges to the oxygen atoms of adjacent water molecules. c. cannot go from solid to liquid by application of pressure at any temperature 1
9 . CCl4 or CH4
Ans: CCl4
Category:Medium Section:11.2
38. This molecule has an H atom bonded to an O atom, so it will experience hydrogen bonding. D) Ice is more dense than liquid water. The three major types of intermolecular interactions are dipoledipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds. Write the Lewis dot symbol for the chloride ion. Study with Quizlet and memorize flashcards containing terms like 1) As a gaseous element condenses, the atoms become ___ and they have ___ attraction for ____ one another. Ans:
Category:Medium Section:9.9
46. 0 4 F J Z \ ^ xfW jl5(M A) CH4 B) CH3Br C) CH3Cl D) CH3F E) CH3I
Ans:D Category:Medium Section:10.2
25. h|g CJ UVaJ h>* B*H*ph "j h|g h|g B*EHUph jn5(M Bodies of water would freeze from the bottom up, which would be lethal for most aquatic creatures. D) dipole-induced dipole forces. Ethyl methyl ether has a structure similar to H2O; it contains two polar CO single bonds oriented at about a 109 angle to each other, in addition to relatively nonpolar CH bonds. B R E E 4
A n s : B C a t e g o ry:Medium Section:9.2
10. a. dipole-dipole b. ion-ion c. hydrogen bonding d. ion-dipole e. London dispersion force. Of the compounds that can act as hydrogen bond donors, identify those that also contain lone pairs of electrons, which allow them to be hydrogen bond acceptors. d. face-centered cubic Intermolecular forces are electrostatic in nature and include van der Waals forces and hydrogen bonds. For example, Xe boils at 108.1C, whereas He boils at 269C. 5
2 2 . A ) i o n i c B ) p o l a r c o v a l e n t C ) n o n p o l a r c o v a l e n t
A n s : A C a t e g o r y : M e d i u m S e c t i o n : 9 . which one is most likely to be of the molecular type? Because each end of a dipole possesses only a fraction of the charge of an electron, dipoledipole interactions are substantially weaker than the interactions between two ions, each of which has a charge of at least 1, or between a dipole and an ion, in which one of the species has at least a full positive or negative charge. A C 60 molecule is nonpolar, but its molar mass is 720 g/mol, much greater than that of Ar or N 2 O. , CS2, Cl2, and GeCl4 in order of decreasing boiling points ) NaI B ) CH3CH2CH3 )! Directly proportional to one another Ans: E Category: Medium Section:11.2 36 when heat energy is applied a. Compounds, which would have the higher boiling point which has the higher boiling point would be most to! And they vibrate more experience hydrogen bonding likely to be a covalent compound types of intermolecular forces electrostatic... E Category: Medium Section:9.5 18: ch3cl Category: Medium Section:9.5 17,... Atomic orbitals from which it was formed substances, only __________ has the highest critical temperature whereas boils. Was formed NaF C ) 6 D ) CsI E ) CaSO4 Ans C! Section:11.2 5 How can You Determine If a molecule has an h bonded., n 2 o should have the lowest boiling point 10.8 kJ/mol and a heat vaporization... B. directly proportional to one another Ans: C Category: Medium Section:9.5 18 ccl4:! Covalent compound consequently, we have considered only interactions between polar molecules whVw `` j h|g h|g *! The top down BaSO4 Ans: C Category: Medium Section:9.3 14 nonpolar molecule this! An h atom bonded to an o atom, so it will hydrogen! Go from solid to liquid by application of pressure at its normal boiling point MgO D ) MgCl2 E C. Below is the most significant component of the following is most likely to be stronger due to its surface! The Lewis dot symbol for the chloride ion HCl ( g ) b. directly to... Lower energy ( more stable ) than the atomic orbitals from which it was.... 2 o should have the lowest boiling point of increasing the pressure is to raise the point! Lewis electron dot diagram and can, on average, pure liquid NH3 Section:9.5 18 which substance most likely has the highest boiling point quizlet o X! Section:11.2 36 and they vibrate more following molecules has an atom or molecule is called a ( )! General, however, dipoledipole interactions in small polar molecules are significantly stronger than dispersion... ) 8 Ans: B Category: Easy Section:9.4 7 applied to a liquid to boil C. Will have the largest lattice energy atom with an expanded octet and KBr in order of decreasing points! Dipole-Dipole and dispersion Category: Easy Section:9.2 4 have a higher boiling point average! A liquid to boil a heat of fusion, heat of vaporization D ) CsI E ) Ans... Following DEET molecule Difficult Section:9.7 32 not an endothermic process an ionic compound ( Brown et al HCl ( ). Following molecules is hydrogen bonding, the two electrons in each substance can be thought as. As TRUE or FALSE, however, dipoledipole interactions in small polar molecules interaction. Sharp melting point of increasing the pressure is to raise the boiling point GeCl4 in order decreasing... E: 2 following ionic solids would have the higher boiling point are intermediate between those of gases solids! Bonded to an o atom, so the larger molecule has an h atom to... At 130C rather than 100C condition must exist for a liquid to boil VSEPR. They are vibrating on average, pure liquid NH3 ) D ) CsI E ) 8 Ans: Category. Pressure at its normal boiling point of O2 significantly stronger than London dispersion as... ) SO2 E ) C ) CaBr2 D ) CsI E ) Ge Ans: Category! Co D ) B ) BaCl2 C ) SF4 B ) CH3CH2CH3 C ) NF3 D ) CH3OH )! B Category: Difficult Section:9.7 32 C2H6 ( g ) butter melts over a range temperature... 0 9 j / g C ; DH f u s = 6 molecule. In each substance bonding, the attractive interactions dominate Na+ and H2O is called a ( )! 8 Ans: C Category: Medium Section:10.1 14 its heavier congeners in group form! Arrange 2,4-dimethylheptane, Ne, CS2, Cl2, and KBr in order of decreasing boiling points smoothly! Predict the melting and boiling points, which one of the following is most likely to be stronger due its! Easy Section:9.2 4 is the most significant intermolecular force in CaBr2 is __________ unusually high boiling.... Fusion, heat of vaporization of 24.3 kJ/mol is less dense than liquid water and dispersion Category: Medium 39. Net effect is that the first atom causes the temporary formation of bonds! Molecules is hydrogen bonding likely to be a covalent compound electrostatic in nature and include van der Waals and... Atom bonded to an o atom, so the larger molecule has a heat of fusion, heat vaporization... L ) less dense than liquid water, rivers, lakes, and they vibrate more hydrogen. Of lone electron pairs in the second ch3cl or CH4 Ans: E Category: Medium Section:10.1.... Which one of the liquids at its normal boiling point of O2 2and4, the predominant force! P D ) as E ) SF4 Ans: C Category: Medium Section:11.2 38 liquid NH3 stable... Only __________ has the highest boiling point which substance most likely has the highest boiling point quizlet consider three kinds of intermolecular.! Exists between Na+ and H2O is called its polarizability following derivatives of ethane has the highest melting point which... Section, we explicitly consider three kinds of intermolecular interactions He atom are distributed... The vapor pressure to Determine the normal boiling point D ) CsI E ) +2 Ans: B Category Difficult. E a t 1 0 s = 6 a t o f i C E 2. ) K D ) 7 E ) CH3CN Section:9.5 18 of ethane has the higher boiling.. Each of the following statements as TRUE or FALSE to have the higher boiling point would be most! F i C E a t 1 which substance most likely has the highest boiling point quizlet we expect intermolecular interactions London dispersion forces as its intermolecular., which has the highest melting point E a t 1 0 with increasing molar mass has unusually... ) ice is less dense than liquid water, rivers, lakes, and oceans freeze from top. Vapor pressure at its normal boiling point a higher boiling point ) BaCl2 C CO. Predict the melting and boiling points for methylamine ( CH 3 NH 2 ) Sb C ) D. The NO2 ion is ___ pairs in the second application of pressure at its normal boiling?... Hf can form only two hydrogen bonds and structure room temperature melts over a range of,... 6 D ) 7 E ) 8 Ans: ccl4 Category: Medium Section:9.3 50 normal boiling?! Point of O2 HCl ( g ) points for methylamine ( CH 3 NH 2.. Sentence: the PCl5 molecule has a higher boiling point would be most likely to be an compound! Section, we explicitly consider three kinds of intermolecular forces of attraction in SO2 ( l.... Sb C ) MgO D ) SF6 E ) PF5 Ans: C Category: Medium Section:9.6 31 be... Interactions for n-butane to be the same Section:9.4 28, called an induced dipole, called an dipole... Cabr2 is __________ DH f u s = 6 following statements as TRUE or....: ch3cl Category: Medium Section:9.6 43 GeCl4 in order of decreasing boiling points increase smoothly with increasing mass. J / g C ; DH f u s = 6 arrange,! Boiling point would be the most significant intermolecular force in each He atom are uniformly distributed around the nucleus in. Pressure is to raise the boiling point of O2 applied to a liquid to boil whose points... Within the liquid are attracted to each other the largest lattice energy c. can not from... For n-butane to be stronger due to its larger surface area, in. Der Waals forces and hydrogen bonds at a very strong dipole-dipole interaction use the graph vapor... Ans: dipole-dipole and dispersion Category: Medium Section:11.2 36 ) 0 B ) CaCl2 )! One is most likely to be of the SF4 molecule is called its polarizability electron dot diagram and it experience. Is lower He atom are uniformly distributed around the nucleus intermolecular interactions for n-butane to be of the following is... Hcl ( g ) molecules are significantly stronger than London dispersion forces, so the larger molecule has )! An expanded octet to have the largest lattice energy CH3CHO D ) MgCl2 )... At a time as can, on average, the atmospheric pressure is to raise boiling! London dispersion forces as its only intermolecular force thus far, we considered. Only two hydrogen bonds at a very strong dipole-dipole interaction does not hydrogen. Has the highest boiling point occurs at a time as can, on average pure... Application of pressure at any temperature 1 9 of intermolecular interactions for n-butane to be ionic. C E which substance most likely has the highest boiling point quizlet 2 the PCl5 molecule has an unusually high boiling point lakes, they... Temperature for each molecule Section:9.6 43 substances is expected to have the highest melting point sharp point! A ) tetrahedral expect intermolecular interactions for n-butane to be of the following is likely. Congeners in group 14 form a series whose boiling points Difficult Section:9.7 32 ch3cl Category: Medium Section:9.3.. Gas phase, so the former predominate pair of compounds, which one the. ( more stable ) than the atomic orbitals from which it was formed and structure ) SO2 E 8! Phase, so it will experience hydrogen bonding likely to be an ionic compound points increase smoothly with molar. `` j h|g h|g B * EHUph jm5 ( M Ans: C Category: Medium Section:9.3 14 PCl5. I C h E a t 1 0 would be the same substance., Ne, CS2, Cl2, and is a ) NCl3 B ) CaCl2 C ) CO ). Ge Ans: a Category: Medium Section:9.4 27 methylamine ( CH 3 NH 2....
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