试题 试卷
题型:单选题 题类:常考题 难易度:普通
四川省江油中学2018-2019学年高二上学期化学12月月考试卷
①2CH3OH(g)=CH3OCH3(g)+H2O(g) △H1=-23.9kJ/mol
②2CH3OH(g)=C2H4(g)+2H2O(g) △H2=-29.1kJ/mol
③CH3CH2OH(g)=CH3OCH3(g) △H3=+50.7kJ/mol
在C2H4(g)+H2O(g)=CH3CH2OH(g) △H4中,△H4等于()
①CH4(g)+4NO2(g)=4NO(g)+CO2(g)+2H2O(g);△H=﹣574kJ/mol
②CH4(g)+4NO(g)=2N2(g)+CO2(g)+2H2O(g);△H=﹣1160kJ/mol.
则Zn(s)+Ag2O(s)═ZnO(s)+2Ag(s)的△H等于( )
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