NH4CN is a salt of weak acid HCN(ka=4.9×10−10) and weak base NH4OH(Kb=1.8×10−5)Correct statement(s) about aqueous solution of NH4CN is/are

NH4CN(aq)⇌ NH4+(aq)C+CN−(aq)CNH4+(aq)C−Ch+CN−(aq)C−Ch+H2O⇌ NH4OH(aq)Ch+HCN(aq)ChDegree of hydrolysis of NH4+ and CN− are nearly equal and hence [NH4OH]≃[HCN]

NH4CN is a salt of weak acid HCN(ka=4.9×10−10) and weak base NH4OH(Kb=1.8×10−5)Correct statement(s) about aqueous solution of NH4CN is/are

NH4CN(aq)⇌ NH4+(aq)C+CN−(aq)CNH4+(aq)C−Ch+CN−(aq)C−Ch+H2O⇌ NH4OH(aq)Ch+HCN(aq)ChDegree of hydrolysis of NH4+ and CN− are nearly equal and hence [NH4OH]≃[HCN]

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$N H_{4} C N$ is a salt of weak acid $H C N (k a = 4.9 \times 10^{- 10})$ and weak base $N H_{4} O H (K_{b} = 1.8 \times 10^{- 5})$
Correct statement(s) about aqueous solution of $N H_{4} C N$ is/are

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Aqueous solution is acidic

Both Cationic and Anionic Hydrolysis possible

Aqueous solution is basic because $K_{b}$ of $N H_{4} O H$ is more than that of $K a$ of HCN

P^H of the solution is independent on concentration of salt solution

answer is B, C, D.

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Detailed Solution

$N H_{4} C N (a q) ⇌_{}^{} \underset{C}{N {H_{4}}^{+} (a q)} + \underset{C}{C N^{-} (a q)}$

$\underset{C - C h}{N {H_{4}}^{+} (a q)} + \underset{C - C h}{C N^{-} (a q)} + H_{2} O ⇌_{}^{} \underset{C h}{N H_{4} O H (a q)} + \underset{C h}{H C N (a q)}$