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[X] + H(2)SO(4) rarr [Y], a colourless g...

`[X] + H_(2)SO_(4) rarr [Y]`, a colourless gas with irritating smell and
`[Y ] + K_(2) Cr_(2)O_(7) +H_(2)SO_(4) rarr` Green solution [X] and[Y ] are, respectively -

A

`Cl^(Ө), HCl`

B

`So_3^(2-),SO_2`

C

`S^(2-), H_2 S`

D

`CO_3^(2-), CO_2`

Text Solution

Verified by Experts

The correct Answer is:
B
`underset((X)) (SO_(3)^(2-)) + 2H^(oplus) rarr underset((Y)) (SO_2) + H_2 O`
`3 SO_2 + K_2 Cr_2 O_7 + H_2 SO_4 rarr K_2 SO_4 + underset("Green coloured solution") (Cr_2(SO_4)_3 + H_2 O)`.
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