(A)Non-electrolytes have better coagulating action on colloids than electrolytes
(B)Sols are coagulated by effective ions whose charge is opposite to that of the sol, and the ions of higher charge are much more effective than the ions of lower chargeCorrect
(C)The charge of the ions has no effect on the coagulation of a sol
(D)Sols are coagulated only by those ions whose charge is similar to that of the sol
Answer: (B)
Solution
The Hardy-Schulze rule is precisely the statement that coagulation of a sol is caused by the ion of the added electrolyte bearing a charge opposite to that of
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