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题型:单选题 题类:常考题 难易度:容易
河南省林州市第一中学2017-2018学年高二上学期化学开学考试试卷
②CO(g)+1/2O2(g) =CO2(g) ΔH=-283 kJ·mol-1
③C(s)+1/2O2(g)=CO(g) ΔH=-110kJ·mol-1
则反应Fe2O3(s)+3C(s)+ 3/2O2(g) =2Fe(s)+3CO2(g)的焓变是( )
2Hg(l)+O2(g)=2HgO(s)△H=﹣181.6kJ•mol﹣1
则反应Zn(s)+HgO(s)=ZnO(s)+Hg(l)的△H为( )
①C(s)+O2(g)=CO2(g)△H1=﹣393.5kJ•mol﹣1;
②H2(g)+ O2(g)=H2O(g)△H2=﹣242.0kJ•mol﹣1;
③CO(g)+ O2(g)=CO2(g)△H3=﹣283.0kJ•mol﹣1;
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