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 已知:Fe2O3(s)+6ec8aac122bd4f6eC(s) = 6ec8aac122bd4f6eCO2(g)+2Fe(s)  H =+234.1 kJ·mol-1

6ec8aac122bd4f6eC(s)+O2(g) = CO2(g)   H =-393.5 kJ·mol-1    

则2Fe(s)+6ec8aac122bd4f6eO2(g) = Fe2O3(s)的H是                 (     )

A.-824.4 kJ·mol-1   B.-627.6 kJ·mol-1   

C.-744.7 kJ·mol-1   D.-169.4 kJ·mol

 

答案:
 A
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