A student was given a sample of colourless solution contaning three cations and was asked to identify the cations: student carried out a series of reactions as given below. White precipitate A is not soluble in:

A student was given a sample of colourless solution contaning three ca

1.	A student was given a sample of colourless solution contaning three cations and was asked to identify the cations: student carried out a series of reactions as given below. White precipitate A is not soluble in:
Answer» `NH_(3)` `2M HCI` `KCN` `Na_(2)S_(2)O_(3)` Solution :`A rarr AgCI, B rarr BaSO_(4), C rarr Zn(OH)_(2)` `A rarr` Insoluble in `HCI`, `BaSO_(4)darr +H_(2)SO_(2) ("conc") rarr BA^(2+) +2HSO_(4)^(-)`