When equal volumes of the following solutions are mixed, precipitation of AgCl `(K_(sp) =1.8 ×10^(-10)`) will occur only with:

Options

A. `10^(-4)M(Ag^(+))` and `10^(-4)M(Cl^(-))`
B. `10^(-5)M(Ag^(+))` and `10^(-5)M(Cl^(-))`
C. `10^(-6)M(Ag^(+))` and `10^(-6) M(Cl^(-))`
D. `10^(-10) M(Ag^(+))` and `10^(-10)M(Cl^(-))`

Answer

A

Explanation

Q for `AgCl = [Ag^(+)][Cl^(-)] = [(10^(-4) xx V)/(2V)][(10^(-4) xx V)/(2V)] = 2.5 xx 10^(-9) because Q gt K_(sp)`, precipitation will occur.