问题
选择题
已知:Fe2O3(s)+C(s)=
CO2(g)+2Fe(s) △H= +234.1kJ·mol-1 C(s) + O2(g) = CO2(g) △H=-39
3.5kJ·mol-1 则2Fe(s)+
O2(g)= Fe2O3(s)的△H是
答案
答案:A
已知:Fe2O3(s)+C(s)=
CO2(g)+2Fe(s) △H= +234.1kJ·mol-1 C(s) + O2(g) = CO2(g) △H=-39
3.5kJ·mol-1 则2Fe(s)+
O2(g)= Fe2O3(s)的△H是
答案:A