Given:
Gof(CO2(g)) = -394.359 KJ/mol
Gof(H2(g)) = 0.0 KJ/mol
Gof(C2H2(g)) = 209.2 KJ/mol
Gof(H2O(g)) = -228.572 KJ/mol
Balanced chemical equation is:
2 CO2(g) + 5 H2(g) ---> C2H2(g) + 4 H2O(g)
ΔGo rxn = 1*Gof(C2H2(g)) + 4*Gof(H2O(g)) - 2*Gof( CO2(g)) - 5*Gof(H2(g))
ΔGo rxn = 1*(209.2) + 4*(-228.572) - 2*(-394.359) - 5*(0.0)
ΔGo rxn = 83.63 KJ/mol
Answer: 83.63 KJ/mol
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