摘要:5.在25℃.101kPa下.1g甲醇燃烧生成CO2和液态水时放热22.68kJ.下列热化学方程式正确的是 A.CH3OH(l)+3/2O2(g) → CO2(g)+2H2O(l) △H=+725.8 kJ/mol B.2CH3OH(l)+3O2(g)→ 2CO2(g)+4H2O(l) △H=-1452 kJ/mol C.2CH3OH(l)+3O2+4H2O(l) △H=-725.8 kJ/mol D.2CH3OH(l)+3O2(g)→ 2CO2(g)+4H2O(l) △H=+1452 kJ/mol

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