Question

Consider the reaction.

CaCO3(s)→CaO(s)+CO2(g)

Estimate ΔG∘ for this reaction at each temperature. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.)

Standard Thermodynamic Quantities for Selected Substances at 25 ∘C

Substance	ΔH∘f(kJ/mol)	S∘(J/mol⋠K)
CaCO3(s)	−1207.6	91.7
CaO(s)	−634.9	38.1
CO2(g)	−393.5	213.8

Part A

295 K

Express your answer using one decimal place.

ΔG∘ =

131.9

kJ

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Part B

1060 K

Express your answer using one decimal place.

Correct

Part B

1060 K Express your answer using one decimal place.

Part C

1440 K

Express your answer using one decimal place.