①H2(g)+ O2(g)=H2O(l) ΔH=-285.8kJ·mol-1
②H2(g)+ O2(g)=H2O(g) ΔH=-241.8kJ·mol-1
③CO(g)=C(s)+ O2(g) ΔH=+110.5kJ·mol-1
④C(s)+O2(g)=CO2(g) ΔH=-393.5kJ·mol-1
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