Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH1=+234.1 kJ/mol;C(s)+O2(g)===CO2(g) ΔH2=-393.5 kJ/mol;则2Fe(s)+O2(g)===Fe2O3(s)的ΔH是
A.-627.6 kJ/mol | B.-824.4 kJ/mol |
C.-744.7 kJ/mol | D.-169.4 kJ/mol |
Fe2O3(s)+C(s)===CO2(g)+2Fe(s) ΔH1=+234.1 kJ/mol;C(s)+O2(g)===CO2(g) ΔH2=-393.5 kJ/mol;则2Fe(s)+O2(g)===Fe2O3(s)的ΔH是
A.-627.6 kJ/mol | B.-824.4 kJ/mol |
C.-744.7 kJ/mol | D.-169.4 kJ/mol |