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On treating a compound with warm dil. H2...

On treating a compound with warm dil. `H_2 SO_4`, gas X is evolved which turns `K_2 Cr_2 O_7` paper acidified with dil. `H_2 SO_4` to a green compound Y. X and Y respectively are -

A

`X = SO_+3 , Y = Cr_2 O_3`

B

`X = SO_3 , Y = Cr_2 (SO_4)_3`

C

`X = SO_2 , Y = Cr_2 (SO_4)_3`

D

`X = SO_2 , Y = Cr_2 O_3`

Text Solution

Verified by Experts

The correct Answer is:
C
`underset((X))(SO_2) + K_2Cr_2O_7 + H_2SO_4 to underset((Y))(Cr_2(SO_4)_3) + K_2 SO_4 + H_2O`
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