Chemistry

Problem

A negatively charged sol of

[\text{AgI}]^-

will not be coagulated by : a.

[\text{AgI}]^{\text{Ag}^+}

(sol) b.

\text{FeCl}_3

(aq) c.

[\text{As}_2\text{S}_3]^{2-}

(sol) d.

\text{MgCl}_2