Answer to Question #73467 in Physical Chemistry for Hayden

Question

2. The reaction for the formation of the diamminesilver ion is as follows:
Ag+ (aq) + 2 NH3 (aq)  Ag(NH3)2+

(a) Write the equilibrium constant expression for the reaction





(b) An experiment was carried out to determine the value of the equilibrium constant, Kc, for the reaction.
Total moles of Ag+ present = 3.6 x 10-3 moles
Total moles of NH3 present = 6.9 x 10-3 moles
Measured concentration of Ag(NH3)2+ at equilibrium = 3.4 x 10-2 M
Total solution volume = 100 mL

Calculate the equilibrium concentration of Ag+ (uncomplexed).






Calculate the equilibrium concentration of NH3 (uncomplexed).






Calculate the value of the equilibrium constant.

Answer 1

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