Using the following data, calculate equilibrium constant K for the reaction AgCl(s)⇌Ag+(aq)+Cl−(aq) ΔG∘f(AgCl)=−109.7kJ,ΔG∘f(Ag + )=77.1kJ, ΔG∘f(Cl−)=−131.2kJ,
A
55.6×103
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B
2.95×10−41
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C
1.78×10−10
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D
9.75
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Solution
The correct option is D1.78×10−10 ΔG∘reaction=∑ΔG∘f(products)−∑ΔG∘f(reactants)=ΔG∘f(Ag+)+ΔG∘f(Cl−)−ΔG∘f(AgCl)=77.1+(−131.2)−(−109.7)=55.6kJ