已知:①Fe2O3(s)+C(s)===
CO2(g)+2Fe(s);ΔH=234.1 kJ·mol-1 ②C(s)+O2(g)===CO2(g);ΔH=-393.5 kJ·mol-1,则2Fe(s)+
O2(g)===Fe2O3(s)的ΔH是( )
A.-824.4 kJ·mol-1 B.-627.6 kJ·mol-1
C.-744.7 kJ·mol-1 D.-169.4 kJ·mol-1
已知:①Fe2O3(s)+C(s)===
CO2(g)+2Fe(s);ΔH=234.1 kJ·mol-1 ②C(s)+O2(g)===CO2(g);ΔH=-393.5 kJ·mol-1,则2Fe(s)+
O2(g)===Fe2O3(s)的ΔH是( )
A.-824.4 kJ·mol-1 B.-627.6 kJ·mol-1
C.-744.7 kJ·mol-1 D.-169.4 kJ·mol-1