Given:
Hof(Cr2O3(s)) = -1139.7 KJ/mol
Hof(CO(g)) = -110.525 KJ/mol
Hof(Cr(s)) = 0.0 KJ/mol
Hof(CO2(g)) = -393.509 KJ/mol
Balanced chemical equation is:
Cr2O3(s) + 3 CO(g) ---> 2 Cr(s) + 3 CO2(g)
ΔHo rxn = 2*Hof(Cr(s)) + 3*Hof(CO2(g)) - 1*Hof( Cr2O3(s)) - 3*Hof(CO(g))
ΔHo rxn = 2*(0.0) + 3*(-393.509) - 1*(-1139.7) - 3*(-110.525)
ΔHo rxn = 290.7 KJ
Answer: 290.7 KJ
Use standard enthalpies of formation to determine AHO. for the reaction: Cr2O3(s) + 3 CO(g) +...
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