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When SO2 is passed through the acidic so...

When `SO_2` is passed through the acidic solution of `K_(2)Cr_(2)O_(7)`

A

the solution becomes blue

B

the solution becomes colourless

C

`SO_(2)` is reduced

D

green `Cr_2(SO_4)_3` is formed

Text Solution

Verified by Experts

The correct Answer is:
D
`SO_(2)` turns acidified `K_2Cr_2O_7` solution .green due to the formation of chromic sulphate `Cr_(2)(SO_(4))_(3)`
`K_(2)Cr_(2)O_(7) + H_(2)SO_(4) + 3SO_(2) to`
`K_(2)SO_(4) + Cr_(2)(SO_(4))_(3) + H_(2)O`
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