Question

When equal volumes of following solution are mixed, precipitation of `AgCl` ?
`(K_(sp)=1.8xx10^(-10))` will occur only with
A. `10^(-4) M Ag^(+)` and `10^(-4) MCl^(-)`
B. `10^(-6) M Ag^(+)` and `10^(-6) MCl^(-)`
C. `10^(-7) M Ag^(+)` and `10^(-7) MCl^(-)`
D. `10^(-5) M Ag^(+)` and `10^(-5) MCl^(-)`

Answer 1

Correct Answer - A
`K_(SP) = [Ag^(+)][Cl^(-)]`
to get PPt Ionic product `gt K_(SP)`
`1.8 xx 10^(-10) = 10^(-4) xx 10^(-4) = 10^(-8)`
`10^(-8) gt 1.8 xx 10^(-10)`