NEET UG CHEMISTRY MCQ: SOLUTIONS

The ratio of concentration of ${NH}_3$ in ${H}_2 {O}$ to the concentration of ${NH}_3$ in ${CHCl}_3$ at $290 \mathrm{~K}$ is 24 at any pressure. Through one litre of pure water ammonia gas was passed, the concentration of ${NH}_3$ was measured to be $0.38 ({M})$. To this solution 0.025 moles of ${CuSO}_4$ was added. In ${NH}_3$ solution all ${Cu}^{2+}$ ions form the complex ${Cu}\left({NH}_3\right)_x^{2+}$. Now over this solution one litre of ${CHCl}_3$ was added, thoroughly shaken and equilibrated. In ${CHCl}_3$ layer, ${Cu}\left({NH}_3\right)_x^{2+}$ was absent but in ${CHCl}_3$ the concentration of ${NH}_3$ was reduced to $0.0112({M})$ at $290 \mathrm{~K}$. Determine the value of ${x}$ in nearest possible integers.