s2COg的精选

问题详情：已知:C(s)+ O2(g)==CO2(g)  △H1CO2 (g) +C( s)==2CO(g)△H22CO(g)+O2(g)==2CO2(g)△H34Fe(s) +3O2(g)==2Fe2O3(s)△H43CO(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A....