On decreasing the pH from 7 to... |JEE Advanced 2023 | Ionic

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JEE Advance2023

Ppaer-1 2023

Question

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

Select the correct option:

A

3

B

4

C

5

D

2

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JEE Advance

Chemistry

Hard

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