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Solutions — Medium JEE chemistry MCQ

The reagent(s) that can selectively precipitate $\mathrm{S}^{2-}$ from a mixture of $\mathrm{S}^{2-}$ and $\mathrm{SO}_{4}^{2-}$ in aqueous solution is(are)
  1. A. $\mathrm{CuCl}_{2}$
  2. B. $\mathrm{BaCl}_{2}$
  3. C. $\mathrm{Pb}\left(\mathrm{OOCCH}_{3}\right)_{2}$
  4. D. $\mathrm{Na}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NO}\right]$

Solution

The correct option is **A**.

CHEMISTRY

medium • PYQ Reworded
Question
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The reagent(s) that can selectively precipitate S2−\mathrm{S}^{2-} from a mixture of S2−\mathrm{S}^{2-} and SO42−\mathrm{SO}_{4}^{2-} in aqueous solution is(are)
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