Colourless salt `(A)` decolourise `I_(2)` solution and gives white precipitate (change to black)
Channel: Doubtnut
Date: 2020-01-26

Colourless salt `(A)` decolourise `I_(2)` solution and gives white precipitate (change to black) with `AgNO_(3)` solution. `(A)` also produces pink colour with `FeCl_(3)` solution. Identigy `(A)` and explain reactions.