Equilibrium - Result Question 53
####55. A base when dissolved in water yields a solution with a hydroxyl ion concentration of $0.05 mol litre^{-1}$. The solution is
[2000]
(a) basic
(b) acidic
(c) neutral
(d) either ‘b’ or ‘c’
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Solution:
- (a) Given : Hydroxyl ion concentration $[OH^{-}]=0.05 mol L^{-1}$. We know that the
$ [H^{+}][OH^{-}]=1 \times 10^{-14} $
or $[H^{+}]=\frac{1 \times 10^{-14}}{0.05}=2 \times 10^{-13} mol L^{-1}$
Since $[OH^{-}]>[H^{+}]$
Therefore the solution is basic.
