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On decreasing the \(\mathrm{pH}\) from 7 to 2 , the solubility of a sparingly soluble salt (MX) of a weak acid (HX) incr…

Q1

On decreasing the \(\mathrm{pH}\) from 7 to 2 , the solubility of a sparingly soluble salt (MX) of a weak acid (HX) increased from \({10}^{-4}\mathrm{mol}{\mathrm{L}}^{-1}\) to \({10}^{-3}\mathrm{mol}{\mathrm{L}}^{-1}\). The \({\mathrm{pK}}_{\mathrm{a}}\) of \(\mathrm{HX}\) is:

a

3

b

4

c

5

d

2

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