已知:Fe2O3(s)+ 3/2C(s)= 3/2CO2(g)+2Fe(s) △H=" +234.1" kJ/mol
C(s)+O2(g)=CO2(g) △H=" -393.5" kJ/mol
则反应2Fe(s)+ 3/2O2(g)=Fe2O3(s)的△H是
A.-169.4 kJ/mol | B.-627.6 kJ/mol |
C.-744.7 kJ/mo | D.-824.4 kJ/mol |
已知:Fe2O3(s)+ 3/2C(s)= 3/2CO2(g)+2Fe(s) △H=" +234.1" kJ/mol
C(s)+O2(g)=CO2(g) △H=" -393.5" kJ/mol
则反应2Fe(s)+ 3/2O2(g)=Fe2O3(s)的△H是
A.-169.4 kJ/mol | B.-627.6 kJ/mol |
C.-744.7 kJ/mo | D.-824.4 kJ/mol |