问题
选择题
已知:Fe2O3(s)+3/2C(s)= 3/2CO2(g)+2Fe(s) △H =+234.1kJ·mol-1
C(s)+O2(g)=CO2(g) △H=-393.5kJ·mol-1 则2Fe(s)+3/2O2(g)=Fe2O3(s)的△H是 [ ]
A.-824.4kJ·mol-1
B.-627.6kJ·mol-1
C.-744.7kJ·mol-1
D.-169.4kJ·mol-1
答案
答案:A