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