1.

White precipitate of PbSO_(4) gets dissolved in:

Answer»

concentrated `H_(2)SO_(4)` on HEATING
concentrated `NaOH`
`(NH_(4))_(2)CO_(3)`
Dilute `HNO_(3)`

Solution :(A)`PbSO_(4)darr +H_(2)SO_(4)` (hot and concentrated) `to Pb^(2+)+2HSO_(4)^(-)`(soluble)
(B)It DISSOLVES FORMING `Na_(2)[Pb (OH)_(4)]` soluble complex.


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