Assertion(A): `Fe^(3+)` can be used for coagulation of `As_(2)S_(3)` sol.
Reason (R): `Fe^(3+)` reacts with `As_(2)S_(3)` to give `Fe_(2)S_(3.)`

Options

A. If both (A) and (R) are correct, and (R) is the correct explanation of (A)
B. If both (A) and (R) are correct, but (R) is the not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.

Answer

C

Explanation

`Fe^(3+)` neutralizes the charge on the negatively charged `As_(2)S_(3)` particles.