Homework Answers
Given:
Gof(I2(g)) = 19.3 KJ/mol
Gof(Cl2(g)) = 0.0 KJ/mol
Gof(ICl(g)) = -5.5 KJ/mol
Balanced chemical equation is:
I2(g) + Cl2(g) ---> 2 ICl(g)
ΔGo rxn = 2*Gof(ICl(g)) - 1*Gof( I2(g)) - 1*Gof(Cl2(g))
ΔGo rxn = 2*(-5.5) - 1*(19.3) - 1*(0.0)
ΔGo rxn = -30.3 KJ
This is when 1 mol of I2 reacts as per balanced equation.
For 1.950 moles of I2 reacting,
ΔGo rxn = -30.3*1.950 = 59.1 KJ
Answer: 59.1 KJ
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