Consider the reactions shown below:

Which of the following statement (s) is/are correct?

Options

A. `[X]` is a yellow coloured precipitate.
B. `[X]` is soluble in ammonia solution
C. `[Y]` gives green coloured solution with excess of sodium hydroxide solution.
D. The conversion of `Cr_(2)O_(7)^(2-)` to `[Y]` is an redox reaction.

Answer

B,C,D

Explanation

(A)`Ag+2CrO_(4)^(2-)to Ag_(2)CrO_(4)darr`(red)`[X]`
(B)`Ag_(2)CrO_(4)darr+4NH_(3)to2[Ag(NH_(3))_(2)]^(+)+CrO_(4)^(2-)`
( C)`Cr^(3+) + 3OH^(-) to Cr(OH)darr ` (green).
`Cr(OH)_(3) +OH^(-) to [Cr(OH)_(4)]^(-)`(green coloured solution complex.)
(D)`3 overset(+4)SO_(2)+overset(+7)Cr_(2)O_(7)^(2-)+2H^(+)to2Cr^(3+)[Y]+3 overset(+6)SO_(4)^(2-)+H_(2)O`