What is the ratio of uncomplexed to complexed to complexed `Zn^(2+)` ion in a solution that is `10 M "in" NH_(3) ` . If the stability constant of `[Zn(NH_(3))_(4)]^(2+)` is `3xx10^(9)`?

Options

A. `3.3xx10^(-9)`
B. `3.3xx10^(-11)`
C. `3.3xx10^(-14)`
D. `3xx10^(-13)`

Answer

C

Explanation

`3xx10^(9)=([Zn(NH_(3))_(4)^(2+)])/([Zn^(2+)])xx(1)/(10^(4))`
`implies ([Zn^(2+)])/([Zn(NH_(3))_(4)^(2+)])=3.3xx10^(-14)`