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题型:单选题 题类:常考题 难易度:容易
安徽省师范大学附属中学2018-2019学年高二上学期化学期中考试试卷
CO2(g)+C(s)=2CO(g)△H2
2CO(g)+O2(g)=2CO2(g)△H3
4Fe(s)+3O3(g)=2Fe2O3(s)△H4
3CO(g)+Fe2O3(s)=3CO2(g)+2Fe(s)△H5
下列关于上述反应焓变的判断正确的是( )
N2(g)+3H2O(l)=2NH3(g)+1.5O2(g),△H.
已知:N2(g)+3H2(g)=2NH3(g)△H=a kJ/mol,
2H2(g)+O2(g)=2H2O(l)△H=b kJ/mol,
则N2(g)+3H2O(l)=2NH3(g)+1.5O2(g)的△H={#blank#}1{#/blank#}kJ/mol(用含a、b的式子表示).
⑵2Ag(s)+ O2(g)=Ag2O(s),△H=﹣25kJ•mol﹣1 ,
则Zn(s)+Ag2O(s)=ZnO(s)+2Ag(s)的△H等于( )
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