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#1 Which of the following should have the lowest molar entropy at 298 K? Select one: a. XY(g) b. XY3(s) c. XY3(l) d. XY2(g) e. XY(s).                           #2 What is the E°cell for the spontaneous reaction made of the following half-reactions? A2+(aq) + 2e– → A(s)     E°half-cell = 0.29 V B4+(aq) + 4e– → B(s)     E°half-cell = 0.55 V Calculate ΔGº for the overall redox reaction:       #3 2X3+(aq) + 2H2O(l) → H2O2(aq) + 2H+(aq) + 2X2+(aq) Given:   H2O2(aq) + 2H+(aq)   +   2e– → 2H2O(l) E°half-cell = 1.77 V   X3+ (aq) + e– → X2+(aq) E°half-cell = 2.63

#1 Which of the following should have the lowest molar entropy at 298 K? Select one: a. XY(g) b. XY3(s) c. XY3(l) d. XY2(g) e. XY(s).                           #2 What is the E°cell for the spontaneous reaction made of the following half-reactions? A2+(aq) + 2e– → A(s)     E°half-cell = 0.29 V B4+(aq) + 4e– → B(s)     E°half-cell = 0.55 V Calculate ΔGº for the overall redox reaction:       #3 2X3+(aq) + 2H2O(l) → H2O2(aq) + 2H+(aq) + 2X2+(aq) Given:   H2O2(aq) + 2H+(aq)   +   2e– → 2H2O(l) E°half-cell = 1.77 V   X3+ (aq) + e– → X2+(aq) E°half-cell = 2.63

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter13: Spontaneous Processes And Thermodynamic Equilibrium
Section: Chapter Questions
Problem 36P
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#1 Which of the following should have the lowest molar entropy at 298 K?

Select one:

a. XY(g)

b. XY3(s)

c. XY3(l)

d. XY2(g)

e. XY(s).                    

 

 

 

#2 What is the E°cell for the spontaneous reaction made of the following half-reactions?

A2+(aq) + 2e– → A(s)     E°half-cell = 0.29 V

B4+(aq) + 4e– → B(s)     E°half-cell = 0.55 V

Calculate ΔGº for the overall redox reaction:

 

 

 

#3 2X3+(aq) + 2H2O(l) → H2O2(aq) + 2H+(aq) + 2X2+(aq)

Given:

 

H2O2(aq) + 2H+(aq)   +   2e– → 2H2O(l)

E°half-cell = 1.77 V

 

X3+ (aq) + e– → X2+(aq)

E°half-cell = 2.63 V

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