Question

Assertion (A) Coagulation power of `Al^(3+)` is more than `Na^(+)`.
Reason (R) Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy-Schulze rule) .
A. Assertion and reason both are correct and the reason is correct explanation of assertion.
B. Assertion and reason both are correct but reason does not explain assertion.
C. Assertion is correct, but reason is incorrect.
D. Assertion is incorrect, but reason is correct.

Answer 1

Correct Answer - A
According to Hardy-Schulze law greater the charge/valency on flocculating ion added greater will be its power to cause precipitation.
Coagulating power `prop` Valency of flocculating ion