Question

Identify the products (A) and (B) in the reactions.
RX + AgCN $\to$ (A) + AgX
RX+ KCN $\to$ (B) + KX

• A. (A) - RCN, (B) - RCN
• B. (A) - RCN, (B) - RNC
• C. (A) - RNC, (B) - RCN
• D. (A) - RNC, (B) -, RNC

Answer 1

Answer: (C)

(A) - RNC, (B) - RCN

AgCN is convalent in nature so it does not dissociate in to $A{g}^{+}$ and $C{H}^{-}$ and on nitrogen electron density is high.

$R-X+AgCN\to RNC+AgX$

KCN is ionic in nature so it dissociates completely, also C-C bond is more stronger then C-N bond.

$R-X+K^{+}\to RCN+KX$

So C is the correct option.