When silver chloride is dissolved in a large excess of ammonia, practically all silver ion can be assumed to exist in form of a sigle ionic species `[Ag_(x)[NH_(3))_(y)]^(x+)`. Computer the values of `x` and `y` using the following two cells.
(a) `Ag|0.4 xx 10^(-3)M AgCl, 1M NH_(3)||40 xx 10^(-3), MAgCl, 1M NH_(3)|Ag`
`E_(cell) = 0.1185 V` at `298 K`
(b) `Ag|3 xx 10^(-3)M AgCl, 1M NH_(3)||3.0 xx 10^(-3)M, AgCl, 0.001 M NH_(3)|Ag`
`E_(cell) = 0.1263 V` at `298 K`.

Answer

`x = 1, y = 2 ;`