Question

Consider the following reaction:
CaCO3(s)→CaO(s)+CO2(g).
Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.)

Part A

320 K

ΔG∘ =

kJ

Part B

1095 K

ΔG∘ =

kJ

Part C

1445 K

ΔG∘ =

kJ

Part D

Predict whether or not the reaction in part A will be spontaneous at 320 K .

-spontaneous

-nonspontaneous

Part E

Predict whether or not the reaction in part B will be spontaneous at 1095 K .

-spontaneous

-nonspontaneous

Part F

Predict whether or not the reaction in part C will be spontaneous at 1445 K .

-spontaneous

-nonspontaneous