C(s)+O2(g)== CO2(g) △H= -393.5kJ/mol ①CO(g)+1/2O2(g)== CO2(g) △H= -283kJ/mol ②①-②得: C(s)+1/2O2(g)=CO(g) △H= -110.5kJ/mol
C(s)+1/2O2(g)=CO(g) △H= -110.5kJ/mol