Assertion (A): Solubility of `AgCN` in acidic solutions is greater than in pure water.
Reason (R) : Solubility equilibrium of `AgCN` is shifted in formwed direction due to the formation of `HCN`.

Options

A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is 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

A

Explanation

`AgCN(s) hArr Ag^(o+) + Cn^(Theta)`
`CN^(Theta) + H^(o+) rarr HCN`.
As `CN^(Theta)` ios are consumed by `H^(o+)` ions to form a `W_(A), HCN`, more `AgCN` is dissolved.