Ionic EquilibriumMedium
Question
A weak acid HX has the dissociation constant 1 × 10–5 M. It forms a salt NaX on reaction with alkali. The percentage hydrolysis of 0.1 M solution of NaX is
Options
A.0.0001%
B.0.01%
C.0.1%
D.0.15%
Solution
$h = \sqrt{\frac{K_{h}}{C}} = \sqrt{\frac{K_{w}}{K_{a}.C}} = \sqrt{\frac{10^{- 14}}{10^{- 5} \times 0.1}} = 10^{- 4}\text{ or 0.01\%}$
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