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4K(2) Cr(2) O(7) overset(heat)rarr 4K(2)...

`4K_(2) Cr_(2) O_(7) overset(heat)rarr 4K_(2) CrO_(4) + 3O_(2) + X`. In the above reaction `X` is

A

`CrO_(3)`

B

`Cr_(2)O_(7)`

C

`Cr_(2)O_(3)`

D

`CrO_(5)`

Text Solution

Verified by Experts

The correct Answer is:
C
Potassium dichromate, on heating gives oxygen and chromic oxide `(Cr_(2)O_(3)).`
`4K_(2)Cr_(2)O_(7)overset(Delta)rarr 4K_(2)CrO_(4)+3O_(2)+2Cr_(2)O_(3)`
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