已知:①2H2(g)+O2(g)=2H2O (g) △H1②3H2(g)+Fe2O3(s)=2Fe(s)+3H2O (g) △H2③2Fe(s)+3/2O2(g)=Fe2O3(s) △H3④2Al(s)+3/2O2(g)=Al2O3(s) △H4⑤2Al(s)+Fe2O3(s)=Al2O3(s)+2Fe(s) △H5下列关于上述反应焓变的判断正确的是
试题篮