Ag Br_(s) + 2S_2O_(3(aq) ) ^(2-) hArr Ag (S_2O_3)_(2(aq) ) ^(3-)+Br_(aq) ^(-)[Using :K_(sp)(AgBr)= 5xx 10 ^(-13)K_(f) (Ag(S_2O_3) _2^(3-) ) =5xx 10^(13) ] What is the molar solubility of AgBr in 0.1 M Na_2S_2O_3

Ag Br_(s) + 2S_2O_(3(aq) ) ^(2-) hArr Ag (S_2O_3)_(2(aq) ) ^(3-)+Br_(a

1.	Ag Br_(s) + 2S_2O_(3(aq) ) ^(2-) hArr Ag (S_2O_3)_(2(aq) ) ^(3-)+Br_(aq) ^(-)[Using :K_(sp)(AgBr)= 5xx 10 ^(-13)K_(f) (Ag(S_2O_3) _2^(3-) ) =5xx 10^(13) ] What is the molar solubility of AgBr in 0.1 M Na_2S_2O_3
Answer» ` 0.5 M` ` 0.45 M` ` 0.045 M` None of these SOLUTION :Due to HIGH `K_f,`ALMOST `Ag^(+) ` converts in to complex ` {:(AgBr +2S_2 O_3^(-2) HARR, [Ag(S_2O_3)_2]^(3-) ,+Br) ,(0.1M,0,0),((0.1-2x),x,x):}` ` 25= (x^(2))/((0.1-2x) ^(2) ), (x)/(0.1 - 2x) =5rArr x =0.045 M`