Question

Calculate the change in Gibbs free energy for each of the following sets of ΔH∘rxn, ΔS∘rxn, and T.

Part A

ΔH∘rxn= 135 kJ ; ΔS∘rxn=− 263 J/K ; T= 301 K

ΔG∘rxn =

kJ

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Part B

ΔH∘rxn=− 135 kJ ; ΔS∘rxn= 263 J/K ; T= 301 K

ΔG∘rxn =

kJ

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Part C

ΔH∘rxn=− 135 kJ ; ΔS∘rxn=− 263 J/K ; T= 301 K

Express your answer using two significant figures.

ΔG∘rxn =

kJ

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Part D

ΔH∘rxn=− 135 kJ ; ΔS∘rxn=− 263 J/K ; T= 605 K

Express your answer using two significant figures.

ΔG∘rxn =

kJ

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Part E

Predict whether or not the reaction in part A will be spontaneous at the temperature indicated.

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Part F

Predict whether or not the reaction in part B will be spontaneous at the temperature indicated.

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Part G

Predict whether or not the reaction in part C will be spontaneous at the temperature indicated.

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Part H

Predict whether or not the reaction in part D will be spontaneous at the temperature indicated.

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