Question

When dilute aqueous solution of $AgN{O}_3$ (excess) is added to $KI$ solution, positively charged sol particles of $AgI$ are formed due to adsorption of ion :

• A. $K^{+}$
• B. $A{g}^{+}$
• C. $I^{-}$
• D. $N{O}_3^{-}$

Answer 1

The correct option is B $A{g}^{+}$

Solution particles possess the tendency to adsorb preferentially the common ion present in solution as follows:

$AgI+A{g}^{+}\to A{g}_2{I}^{+}$

So, option B is correct.