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Question:

When dilute aqueous solution of AgNO3 (excess) is added to KI solution, positively charge sol of AgI in formed due to adsorption of:

Ag+

NOđ•’·

Ođ•’¶

K+

Solution:

When KI is added in excess of AgNO3, a positively charged sol of silver iodide is formed due to adsorption of Ag+ from dispersion medium on the precipitate of silver iodide.