Problem: Consider the following Gibbs energies at 25 °C.Substance Ag (aq) Cl–(aq) AgCl(s) Br–(aq) AgBr(s)(a) Calculate ?G°rxn for the dissolution of AgCl(s).(b) Calculate the solubility-product constant of AgCl.(c) Calculate ?G°rxn for the dissolution of AgBr(s).(d) Calculate the solubility-product constant of AgBr. Substance ΔGf                                                       Ag+                                              77.1 Cl- -131.2 AgCl -109.8 Br- -104 AgBr -96.9

FREE Expert Solution

ΔG°rxn=ΔGf, product - ΔGf, reactant


ΔG°rxn=-RTlnK


For AgCl


Dissolution: AgCl(s) Ag+(aq) + Cl-(aq)


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Problem Details

Consider the following Gibbs energies at 25 °C.

Substance Ag (aq) Cl–(aq) AgCl(s) Br–(aq) AgBr(s)

(a) Calculate ?G°rxn for the dissolution of AgCl(s).

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

(c) Calculate ?G°rxn for the dissolution of AgBr(s).

(d) Calculate the solubility-product constant of AgBr.

 Substance
 ΔGf                                                      
 Ag+                                              77.1
 Cl- -131.2
 AgCl -109.8
 Br- -104
 AgBr -96.9