Crystals of AgBr can be removed from black-and-white photographic film by reacting the AgBr with sodium thiosulphateAgBr(s) + 2S_2O_3^(2-) (aq) iff [Ag(S_2O_3)_2]^(3-) (aq) + Br (aq) (a) What is the equilibrium constant for this dissolving process?(b) In order to dissolve 2.5 g of AgBr in a 1-litre solution, how many moles of Na_2S_2O_3must be added? K_(sp) (AgBr) = 5 xx 10^(-13), K_f [Ag (S_2O_3)_2]^(3-)= 2.9 xx 10^13

Crystals of AgBr can be removed from black-and-white photographic film

1.	Crystals of AgBr can be removed from black-and-white photographic film by reacting the AgBr with sodium thiosulphateAgBr(s) + 2S_2O_3^(2-) (aq) iff [Ag(S_2O_3)_2]^(3-) (aq) + Br (aq) (a) What is the equilibrium constant for this dissolving process?(b) In order to dissolve 2.5 g of AgBr in a 1-litre solution, how many moles of Na_2S_2O_3must be added? K_(sp) (AgBr) = 5 xx 10^(-13), K_f [Ag (S_2O_3)_2]^(3-)= 2.9 xx 10^13
Answer» SOLUTION :(a) 14.5 (B) 0.03 MOLE