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题型:单选题 题类:常考题 难易度:普通
辽宁省盘锦市辽河油田第二高级中学2019-2020学年高三上学期化学期末考试试卷
CO(g)+ O2(g)═CO2(g)△H=﹣283.0kJ•mol﹣1②
C(石墨)+O2(g)═CO2(g)△H=﹣393.5kJ•mol﹣1③
则4Fe(s)+3O2(g)═2Fe2O3(s)的△H为( )
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
下列说法中错误的是( )
②H2(g)+ O2(g)═H2O(l) △H=−285.8kJ/mol
则CH3OH(g) + O2(g)═CO2(g)+2H2O(l)的△H为( )
①2Li(s)+ H2(g)=2LiH(s) △H=-182 kJ/mol
②2H2(g)+O(g)=2H2O1) △H=- 572 kJ/mol
③4Li(s)+O2(g) = 2Li2O(s) △H=-1196 kJ/mol
则反应2LiH(s)+O2(g)=Li2O(s)+H2O(l)的焓变为( )
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