Ionic EquilibriumHard
Question
The equilibrium constant for the ionization of RNH2(g) in water as RNH2(g) + H2O(l) $\rightleftharpoons$ RNH3+ (aq) + OH−(aq) is 10−6 at 25o C. Which of the following is/ are correct?
Options
A.pH of the solution is 11.0 at partial pressure of RNH2 (g) = 1 bar.
B.Forward reaction is favoured by the addition of HCl (aq).
C.Forward reaction is favoured by the addition of H2O (l).
D.Forward reaction is favoured by the addition of RNH2 (g).
Solution
$\underset{1\text{ bar}}{RNH_{2}(g)} + H_{2}O(l) \rightleftharpoons \underset{x\text{ M}}{RNH_{3}^{+}(aq)} + \underset{x\text{ M}}{OH^{-}(aq)}$
$10^{- 6} = \frac{x.x}{1} \Rightarrow x = 10^{- 3} \Rightarrow P^{OH} = 3.0 \Rightarrow P^{H} = 11.0$
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