①CaCO3=CaO+CO2 ΔH=+177.7kJ•mol-1
②C(s)+O2(g)=CO2(g) ΔH=-393.5kJ•mol-1
③C(s)+H2O(g)=CO(g)+H2(g) ΔH=+131.3kJ
④CO(g)+O2(g)=CO2(g) ΔH=-283kJ•mol-1
⑤HNO3(aq)+NaOH(aq)=NaNO3(aq)+H2O(l) ΔH=-57.3kJ•mol-1
⑥0.5H2SO4(l)+NaOH(l)=0.5Na2SO4(l)+H2O(l) ΔH=-57.3kJ•mol-1
⑦2H2(g)+O2(g)=2H2O(l) ΔH=-571.6kJ•mol-1