What is ΔG° at 500.0 K for the following reaction?  You need to show your works. Zn(s) + H2O(g) →ZnO(s) + H2(g) Substance ΔH°f (kJ/mol) at 298 K S° (J/(mol∙K)) at 298 K Zn(s) 0 41.6 H2O(g) –241.8 188.7 ZnO(s) –350.5 43.7 H2(g) 0 130.6 A. 92.0 kJ B. –136.7 kJ C. –80.7 kJ D. –92.0 kJ E. 80.7 kJ

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Chapter18: Thermodynamics And Equilibrium
Section: Chapter Questions
Problem 18.20QP: Given the following information at 25C, calculate G at 25C for the reaction 2A(g)+B(g)3C(g)...
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7. What is ΔG° at 500.0 K for the following reaction?  You need to show your works.

Zn(s) + H2O(g) →ZnO(s) + H2(g)

Substance

ΔH°f (kJ/mol) at 298 K

S° (J/(mol∙K)) at 298 K

Zn(s)

0

41.6

H2O(g)

–241.8

188.7

ZnO(s)

–350.5

43.7

H2(g)

0

130.6

A. 92.0 kJ
B. –136.7 kJ
C. –80.7 kJ
D. –92.0 kJ
E. 80.7 kJ
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