Consider the Gibbs energies at 25 ∘C. Substance     Δ?∘f (kJ·mol−1) Ag+(aq)     77.1 Cl−(aq)     −131.2 AgCl(s)     −109.8 Br−(aq)     −

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Consider the Gibbs energies at 25 ∘C.

Substance     Δ?∘f (kJ·mol−1)
Ag+(aq)     77.1
Cl−(aq)     −131.2
AgCl(s)     −109.8
Br−(aq)     −104.0
AgBr(s)     −96.9

a) Calculate Δ?∘rxn for the dissolution of AgCl(s). 

(b) Calculate the solubility-product constant of AgCl.

(c) Calculate Δ?∘rxn for the dissolution of AgBr(s).

d) Calculate the solubility-product constant of AgBr.

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