The equilibrium constant for the ionization of R-NH2 (g) in water as :
$R - {NH}_{2} (g) + H_{2} O (l) ⇌ R - {NH}_{3}^{+} (a q) + {OH}^{-} (a q)$
is 10- 6 at 25° C. Select correct statement(s).

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pH of solution is 11 and $P_{R {NH}_{2} (g)} = 1$ 1 bar

Forward reaction is favoured by addition of ${RNH}_{2}$ (g)

Forward reaction is favoured by addition of $H_{2} O$ (l)

Forward reaction is favoured by addition of HCI(aq)

answer is A, B, C, D.

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Detailed Solution

Given reaction is,

$R - {NH}_{2} (g) + H_{2} O (l) ⇌ R - {NH}_{3}^{+} (a q) + {OH}^{-} (a q)$

Here,

$\begin{array}{l} K_{b} = 10^{- 6} \\ pOH = \frac{1}{2} [p K_{b} - \log c] \end{array}$

$\Rightarrow c = 1 (active mass)$

Here, forward reaction is favoured by addition of HCI(aq), $H_{2} O$ (l) or ${RNH}_{2}$ (g).

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