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已知:2H2(g)+O2(g)=2H2O(g)ΔH1①,3H2(g)+Fe2O3(s)=2Fe(s)+3H2O(g) ΔH2②,2Fe(s)+3/2O2(g)=Fe2O3(s) ΔH3③,2Al(s)...
题目内容:
已知:2H2(g)+O2(g)=2H2O(g)ΔH1①,3H2(g)+Fe2O3(s)=2Fe(s)+3H2O(g) ΔH2②,2Fe(s)+3/2O2(g)=Fe2O3(s) ΔH3③,2Al(s)+3/2O2(g)=Al2O3(s) ΔH4④,2Al(s)+Fe2O3(s)=Al2O3(s)+2Fe(s) ΔH5 ⑤,下列关于上述反应焓变的判断正确的是
A. ΔH1<0,ΔH3>0 B. ΔH5<0,ΔH4<ΔH3 C. ΔH1=ΔH2+ΔH3 D. ΔH3=ΔH4+ΔH5
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