Question 1

The enthalpy and entropy of vaporization of ethanol are 38.6 kJ/mol and 109.8 J/mol · K, respectively. What is the boiling point of ethanol under equilibrium conditions, in C?

Accepted Answer

A)  (352
C)  
B)  (78.5
C)  
C)  (2.84
C)  
D)  (624
C)  
E)  Not enough information is given to answer the question.

Question 2

The entropy of an oxygen molecule in air corresponds to approximately 1  1010 accessible states. Which of the following states contribute most to this entropy?
I. translational 
II. rotational
III. vibrational 
IV. electronic

Accepted Answer

A)  I and II
B)  I and III
C)  I and IV
D)  II and III
E)  III and IV

Question 3

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Accepted Answer

A)      (NH4NO3, s)  refers to which of the following reactions? 
A)     
B)     
C)     
D)     
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B)      (NH4NO3, s)  refers to which of the following reactions? 
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B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)      (NH4NO3, s)  refers to which of the following reactions? 
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B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)      (NH4NO3, s)  refers to which of the following reactions? 
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B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)      (NH4NO3, s)  refers to which of the following reactions? 
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D)     
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Question 4

Which of the following relationships are sufficient to ensure that reactants and products will be in their standard states at equilibrium?
I. G  0
II. G  0
III. K  1

Accepted Answer

A)  I only
B)  II only
C)  III only
D)  II and III only
E)  Reactants and products can never be in equilibrium in their standard states.

Question 5

Which of the following processes is/are spontaneous?
I. Iron in the open air rusts.
II. Liquid water in a freezer turns to ice.
III. A spark ignites a mixture of propane and air.

Accepted Answer

A)  I only
B)  I and II only
C)  I and III only
D)  II and III only
E)  I, II, and III are all spontaneous.

Question 6

The prediction of linearity in a van 't Hoff plot assumes ________

Accepted Answer

A)  that the reaction is run under ideal conditions.
B)  that H  and S  are independent of temperature.
C)  that G  is independent of temperature.
D)  that ln K is independent of temperature.
E)  none of the above.

Exam 17: Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Which of the following relationships are sufficient to ensure that reactants and products will be in their standard states at equilibrium? I. G  0 II. G  0 III. K  1

Correct Answer
verified

The entropy of an oxygen molecule in air corresponds to approximately 1  10¹⁰ accessible states. Which of the following states contribute most to this entropy? I. translational II. rotational III. vibrational IV. electronic

Correct Answer
verified

The prediction of linearity in a van 't Hoff plot assumes ________

Correct Answer
verified

The symbol  (NH₄NO₃, s) refers to which of the following reactions?

Correct Answer
verified

Which of the following processes is/are spontaneous? I. Iron in the open air rusts. II. Liquid water in a freezer turns to ice. III. A spark ignites a mixture of propane and air.

Correct Answer
verified

The enthalpy and entropy of vaporization of ethanol are 38.6 kJ/mol and 109.8 J/mol · K, respectively. What is the boiling point of ethanol under equilibrium conditions, in C?

Correct Answer
verified

Exam 17: Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Which of the following relationships are sufficient to ensure that reactants and products will be in their standard states at equilibrium? I. G  0 II. G  0 III. K  1

Correct AnswerverifiedShow Answer

The entropy of an oxygen molecule in air corresponds to approximately 1  1010 accessible states. Which of the following states contribute most to this entropy? I. translational II. rotational III. vibrational IV. electronic

Correct AnswerverifiedShow Answer

The prediction of linearity in a van 't Hoff plot assumes ________

Correct AnswerverifiedShow Answer

The symbol  (NH4NO3, s) refers to which of the following reactions?

Correct AnswerverifiedShow Answer

Which of the following processes is/are spontaneous? I. Iron in the open air rusts. II. Liquid water in a freezer turns to ice. III. A spark ignites a mixture of propane and air.

Correct AnswerverifiedShow Answer

The enthalpy and entropy of vaporization of ethanol are 38.6 kJ/mol and 109.8 J/mol · K, respectively. What is the boiling point of ethanol under equilibrium conditions, in C?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The entropy of an oxygen molecule in air corresponds to approximately 1  10¹⁰ accessible states. Which of the following states contribute most to this entropy? I. translational II. rotational III. vibrational IV. electronic

Correct Answer
verified

Correct Answer
verified

The symbol  (NH₄NO₃, s) refers to which of the following reactions?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified