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Identify A, B and C in the given below reaction sequence A --HNO3--> Pb(NO3)2 --H2SO4--> B --(1) Ammonium acetate (2) Acetic acid (3) K2CrO4--> C C is yellow ppt

1. PbCl2, PbSO4, PbCrO4
2. PbS, PbSO4, PbCrO4
3. PbS, PbSO4, Pb(CH3COO)2
4. PbCl2, Pb(SO4)2, PbCrO4

Correct answer: PbS, PbSO4, PbCrO4

Solution

The correct option identifies the compounds formed in the reaction sequence accurately. A is PbS, which can be formed from the reaction of lead with sulfide, B is PbSO4 produced from the reaction with sulfuric acid, and C is PbCrO4, which is a yellow precipitate formed when PbSO4 reacts with K2CrO4.

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