Use the information provided to determine δh°rxn for the following reaction: δh°f (kj/mol) 3 fe2o3(s) + co(g) → 2 fe3o4(s) + co2(g) δh°rxn = ? fe2o3(s) -824 fe3o4(s) -1118 co(g) -111 co2(g) -394

ΔH°rxn = -47 kJ

Explanation:

Using Hess´s law for the reaction:

3 Fe2O3(s) + CO(g) → 2 Fe3O4(s) + CO2(g) ,

the ΔH°rxn will be given by the expression:

ΔH°rxn kJ  =   2ΔHºf(Fe3O4)  + ΔHºf(CO2)   - ( 3ΔHºf(Fe2O3) + ΔHºf(CO) )

=  2(-1118) + (-394) - ( 3( -824 ) + ( -111 ) )

= - 47 kJ

chemistry sucks a**

explanation: