②C(s)+H2O(g)=CO(g)+H2(g);ΔH=-131.3kJ/mol
③1/2H2SO4(l)+NaOH(l)=1/2Na2SO4(l)+H2O(l);ΔH=-57.3kJ/mol
④C(s)+O2(g)=CO2(g);ΔH=-393.5kJ/mol
⑤CO(g)+1/2O2(g)=CO2(g);ΔH=-283kJ/mol
⑥HNO3(aq)+NaOH(aq)=NaNO3(aq)+H2O(l);ΔH=-57.3kJ/mol
⑦2H2(g)+O2(g)=2H2O(l);ΔH=-517.6kJ/mol