For CaCO3(s)→CaO(s)+CO2(g) at 977oC, ΔH=174 kJ/mol; then ΔE is:
For the reaction CaCO3(s)→CaO(s)+CO2(g) (at 1240K and 1 atm.) ΔH=176kJ/mol, then ΔE will be: