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Consider the reactions shown below: ...

Consider the reactions shown below:

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

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.

Text Solution

Verified by Experts

The correct Answer is:
B,C,D

(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`
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