Explain halides are removed by wadhing the film

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Reference no: EM13180575

During ther processing of black-and-white film, excess silver (I) halides are removed by wadhing the film in a bath containing sodium thiosulfate. This treatment is based on the followig complexation reaction:

Ag+ (aq) + 2 S2O3 2- (aq) <-----> Ag(S2O3)2 3- (aq) Kf = 5 x 10^13

What is the ratio of [Ag+] to [Ag(S2O3)2 3-] in a bath in which [S2O3]2- = .238 M?

Reference no: EM13180575

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