已知下列热化学方程式:
①C(s)+O2(g)==CO2(g)△H= —393.5kJ/mol
②CO(g)+ 1/2 O2(g)="=" CO2(g)△H= —283.0kJ/mol
③2Fe(s)+3CO(g)==Fe2O3(s)+3C(s)△H= —489.0kJ/mol
则4Fe(s)+3O2(g)==2Fe2O3(s)的反应热ΔH为( )
A.-1641.0kJ/mol | B.+3081kJ/mol |
C.+663.5kJ/mol | D.-2507.0kJ/mol |
已知下列热化学方程式:
①C(s)+O2(g)==CO2(g)△H= —393.5kJ/mol
②CO(g)+ 1/2 O2(g)="=" CO2(g)△H= —283.0kJ/mol
③2Fe(s)+3CO(g)==Fe2O3(s)+3C(s)△H= —489.0kJ/mol
则4Fe(s)+3O2(g)==2Fe2O3(s)的反应热ΔH为( )
A.-1641.0kJ/mol | B.+3081kJ/mol |
C.+663.5kJ/mol | D.-2507.0kJ/mol |
试题篮
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