Given:
Gof(SO2(g)) = -300.2 KJ/mol
Gof(O2(g)) = 0.0 KJ/mol
Gof(SO3(g)) = -371.1 KJ/mol
Balanced chemical equation is:
2 SO2(g) + O2(g) ---> 2 SO3(g)
ΔGo rxn = 2*Gof(SO3(g)) - 2*Gof( SO2(g)) - 1*Gof(O2(g))
ΔGo rxn = 2*(-371.1) - 2*(-300.2) - 1*(0.0)
ΔGo rxn = -141.8 KJ
We have:
T = 298.15 K
ΔGo = -141.8 KJ/mol
ΔGo = -141800 J/mol
use:
ΔGo = -R*T*ln Kc
-141800 = - 8.314*298.15* ln(Kc)
ln Kc = 57.2047
Kc = 6.977*10^24
Answer: 6.98*10^24
Calculate the equilibrium constant from the standard free energy change. Using standard thermodynamic data (linked), calculate...
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help with this please
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