问题
选择题
已知:
3/2CO2(g)+2Fe(s) = Fe2O3(s)+3/2C(s) △H=-234.1kJ·mol-1
CO2(g) = C(s)+O2(g) △H=+393.4kJ·mol-1
则2Fe(s)+3/2O2(g)=Fe2O3(s)的△H是[ ]
A.-824.2kJ·mol-1
B.-627.5kJ·mol-1
C.+861.6kJ·mol-1
D.+159.3kJ·mol-1
答案
答案:A