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题型:单选题 题类:常考题 难易度:普通
宁夏长庆高级中学2019-2020学年高二上学期化学期中考试试卷
①CH3OH(g)+H2O(g)═CO2(g)+3H2(g)△H=+49.0kJ•mol﹣1
②CH3OH(g)+ O2(g)═CO2(g)+2H2(g)△H=﹣192.9kJ•mol﹣1
下列说法正确的是( )
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:
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