Question 1

Liquid sodium can be used as a heat transfer fluid.Its vapor pressure is 40.0 torr at 633°C and 400.0 torr at 823°C.Calculate its heat of vaporization.

Accepted Answer

A)  43.4 kJ/mol
B)  52.5 kJ/mol
C)  70.6 kJ/mol
D)  1.00  ×	imes×  102 kJ/mol
E)  None of these choices is correct. F) C) and E)
G) A) and B)

Question 2

Which of the following pairs of substances is arranged so that the one with higher viscosity is listed first?

Accepted Answer

A)  a
B)  b
C)  c
D)  d
E)  None of these choices is correct.F) B) and C)
G) B) and D)

Question 3

Which of the following atoms should have the smallest polarizability?

Accepted Answer

A)  Si
B)  S
C)  Te
D)  Bi
E)  BrF) A) and C)
G) A) and D)

Question 4

Which of the following has a boiling point which does not fit the general trend?

Accepted Answer

A)  NH3
B)  PH3
C)  AsH3
D)  SbH3
E)  BiH3F) C) and D)
G) A) and D)

Question 5

In the packing of identical atoms with cubic unit cells,the packing efficiency increases as the coordination number increases.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following substances will have hydrogen bonds between molecules?

Accepted Answer

A)  (CH3) 3N
B)  CH3-O-CH3
C)  CH3CH2-OH
D)  CH3CH2-F
E)  HIF) A) and B)
G) A) and C)

Question 7

In which of the following compounds will the molecules not form hydrogen bonds with each other?

Accepted Answer

A)  a
B)  b
C)  c
D)  d
E)  eF) C) and E)
G) A) and B)

Question 8

Diethyl ether,used as a solvent for extraction of organic compounds from aqueous solutions,has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used.How much energy is released when 100.0 g is cooled from 53.0°C to 10.0°C?

Accepted Answer

A)  10.1 kJ
B)  13.1 kJ
C)  16.1 kJ
D)  45.2 kJ
E)  48.6 kJF) A) and C)
G) All of the above

Question 9

In an ionic solid MX consisting of the monatomic ions,M+ and X-,the coordination number of M+ is _______________.

Accepted Answer

A)  1
B)  2
C)  6
D)  8
E)  impossible to predict without knowing the crystal structure of MXF) C) and D)
G) None of the above

Exam 12: Intermolecular Forces: Liquids,solids,and Phase Changes

Diethyl ether,used as a solvent for extraction of organic compounds from aqueous solutions,has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used.How much energy is released when 100.0 g is cooled from 53.0°C to 10.0°C?

Correct Answer
verified

Which of the following substances will have hydrogen bonds between molecules?

Correct Answer
verified

Which of the following has a boiling point which does not fit the general trend?

Correct Answer
verified

Which of the following atoms should have the smallest polarizability?

Correct Answer
verified

Liquid sodium can be used as a heat transfer fluid.Its vapor pressure is 40.0 torr at 633°C and 400.0 torr at 823°C.Calculate its heat of vaporization.

Correct Answer
verified

In which of the following compounds will the molecules not form hydrogen bonds with each other?

Correct Answer
verified

Which of the following pairs of substances is arranged so that the one with higher viscosity is listed first?

Correct Answer
verified

In the packing of identical atoms with cubic unit cells,the packing efficiency increases as the coordination number increases.

Correct Answer
verified

In an ionic solid MX consisting of the monatomic ions,M⁺ and X^-,the coordination number of M⁺ is _______________.

Correct Answer
verified

Exam 12: Intermolecular Forces: Liquids,solids,and Phase Changes

Diethyl ether,used as a solvent for extraction of organic compounds from aqueous solutions,has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used.How much energy is released when 100.0 g is cooled from 53.0°C to 10.0°C?

Correct AnswerverifiedShow Answer

Which of the following substances will have hydrogen bonds between molecules?

Correct AnswerverifiedShow Answer

Which of the following has a boiling point which does not fit the general trend?

Correct AnswerverifiedShow Answer

Which of the following atoms should have the smallest polarizability?

Correct AnswerverifiedShow Answer

Liquid sodium can be used as a heat transfer fluid.Its vapor pressure is 40.0 torr at 633°C and 400.0 torr at 823°C.Calculate its heat of vaporization.

Correct AnswerverifiedShow Answer

In which of the following compounds will the molecules not form hydrogen bonds with each other?

Correct AnswerverifiedShow Answer

Which of the following pairs of substances is arranged so that the one with higher viscosity is listed first?

Correct AnswerverifiedShow Answer

In the packing of identical atoms with cubic unit cells,the packing efficiency increases as the coordination number increases.

Correct AnswerverifiedShow Answer

In an ionic solid MX consisting of the monatomic ions,M+ and X-,the coordination number of M+ is _______________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

In an ionic solid MX consisting of the monatomic ions,M⁺ and X^-,the coordination number of M⁺ is _______________.

Correct Answer
verified