In photography, unexposed silver bromide is removed from film by
soaking the film in a solution...
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Chemistry
In photography, unexposed silver bromide is removed from film bysoaking the film in a solution of sodium thiosulfate,Na2S2O3. Silver ion forms asoluble complex with thiosulfate ion,S2O32-, that has the formulaAg(S2O3)23-, andformation of the complex causes the AgBr in the film to dissolve.The Ag(S2O3)23- complexhas Kform= 2.0 x 1013. How manygrams of AgBr (Ksp= 5.4 x 10-13)will dissolve in 126 mL of 1.27 MNa2S2O3 solution?
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Kform AgS2O323 AgS2O322 20 x 1013 Ksp AgBr 54 x 1013 AgBr Ag Br Ksp AgBr 54 x 1013 Ag 2 S2O32 AgS2O323 Kform AgS2O323 AgS2O322 20
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