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When sulphur dioxide is passed in an aci...

When sulphur dioxide is passed in an acidified `K_2Cr_2O_7` solution,the oxidation state of sulphur is changed from

A

+ 4 to + 6

B

+ 6 to + 4

C

+ 4 to 0

D

+ 4 to + 2

Text Solution

Verified by Experts

The correct Answer is:
A
`K_2Cr_2O_7` acts as a strong oxidising agent. It oxidises other compounds and gets itself reduced. In `SO_2,S` is in + 4 state so it gets oxidised to +6 state which is maximum group oxidation state.
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