When `H_(2)O_(2)` is added to ice cold solution of acidified potassium dichromate containing ether. The contents are shaken allowed to stand, then

Options

A. a blue colour is obtained in ether due to formation of `Cr_(2)(SO_(4))_(3)`
B. a blue colour is obtained in ether due to formation of `CrO_(5)`
C. a blue colour is obtained in ether due to formation of `CrO_(3)`
D. chromyl chloride is formed.

Answer

B

Explanation

`Cr_(2)O_(7)^(2-)+2H^(+)+4H_(2)O_(2) rarr underset(underset("in ether")("Bluecolour"))(2CrO_(5))+5H_(2)O`