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.)
300K
1000K
1440K

Answer 1

so you first need to calculate \(\sf \Delta S^o\) and \(\sf \Delta H^o\), then use:

\(\sf \Delta G= \Delta H^o-T \Delta S^o\)