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ID: 588895 • Letter: N
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ning Jump to... homa State University, Stillwater-Chem 1515-Fall17-LAVINE> Activities and Due Dates Chapter 17 HW Set2 Res 11/29/2017 11:55 PM0/100 Gradebook Question 5 of University Science Books Map d Consider the flowing Gbbs energies at 25 Ag (aq) Cr 77.1 1312 109.8 -104.0 -96.9 or the dasolution of Apio) )aulale the sokubililyprodust onslant of Agci Number umber kJ mol (e) Calculale de for the dissolution of Agar(s)(d) Calculiate the solubility-product constant of AgBr kJ. mol careers privacy policy terms of use contact us help earch aceExplanation / Answer
AgCl(s) ---> Ag^+(aq) + Cl^-(aq)
DG0rxn = (DG0f,Ag+ + DG0f,Cl^-) - (DG0f,AgCl)
= (77.1 + (-131.2)) - (-109.8)
= 55.7 kj/mol
DG0 = - RTlnKsp
55.7*10^3 = -8.314*298lnKsp
Ksp of AgCl = 1.723*10^-10
AgBr(s) ---> Ag^+(aq) + Br^-(aq)
DG0rxn = (DG0f,Ag+ + DG0f,Br^-) - (DG0f,AgBr)
= (77.1 + (-104.0)) - (-96.9)
= 70 kj/mol
DG0 = - RTlnKsp
70*10^3 = -8.314*298lnKsp
Ksp of AgBr = 5.36*10^-13
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