Analytical ChemistryHard
Question
White precipitate of PbSO4 gets dissolved in :
Options
A.concentrated H2SO4 on heating
B.concentrated NaOH
C.(NH4)2CO3
D.dilute HNO3
Solution
(A) PbSO4↓ + H2SO4 (hot and concentrated) → Pb2+ + 2HSO4- (soluble)
(B) It dissolves forming Na2[Pb(OH)4] soluble complex.
(B) It dissolves forming Na2[Pb(OH)4] soluble complex.
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