Why the $\mathrm{pH}$ of aqueous solution of copper sulphate is less than 7 ?

Why the $\mathrm{pH}$ of aqueous solution of copper sulphate is less than 7 ?
  1. It is a salt of strong acid and weak base.
  2. It is a salt of weak acid and weak base.
  3. It is salt of strong acid and strong base.
  4. It is a salt of weak acid and strong base.

Solution

$\mathrm{CuSO}_4$ is a salt of $\mathrm{Cu}(\mathrm{OH})_2(\mathrm{WB})$ and $\mathrm{H}_2 \mathrm{SO}_4(\mathrm{SA})$

Asked in: MHT CET 2022 (08 Aug Shift 2)

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