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Question: Answered & Verified by Expert
Which salt from following forms aqueous solution having $\mathrm{pH}$ less than 7 ?
ChemistryIonic EquilibriumMHT CETMHT CET 2023 (09 May Shift 1)
Options:
  • A $CH_3COONa$
  • B $Na_2SO_4$
  • C $CuSO_4$
  • D $Na_2CO_3$
Solution:
1576 Upvotes Verified Answer
The correct answer is: $CuSO_4$
A salt of strong acid and weak base forms aqueous solution having $\mathrm{pH}$ less than 7 (that is, it forms an acidic solution). $\mathrm{CuSO}_4$ is salt of strong acid $\mathrm{H}_2 \mathrm{SO}_4$ and weak base $\mathrm{Cu}(\mathrm{OH})_2$.

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