① H2(g)+ O2(g)=H2O(l) ΔH =-285kJ/mol
② H2(g)+ O2(g)=H2O(g) ΔH =-241.8kJ/mol
③ C(s)+ O2(g)=CO(g) ΔH =-110.4 kJ/mol
④ C(s)+ O2(g)=CO2(g) ΔH =-393.5 kJ/mol
回答下列各问: