Chemical & Ionic Equilibrium · JEE Advanced previous year questions

2023 2 questions

1. Q402023 · 4 Jun 2023 · Paper 1

   On decreasing the $p\mathrm{H}$ 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 $p{K}_{\mathrm{a}}$ of $\mathrm{HX}$ is

   1. A.3
   2. B.4
   3. C.5
   4. D.2
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   Answer: B

2. Q382023 · 4 Jun 2023 · Paper 2
   
   1. A.(A)
   2. B.(B)
   3. C.(C)
   4. D.(D)
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   Answer: A