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When an inorganic compound reacts with S...

When an inorganic compound reacts with `SO_2` in aqueous medium produces `(A). (A)` on reaction with `Na_2 CO_3` gives the compound `(B)` which with sulphur gives a substance `(c)` used in photography. The compound `(c)` is.

A

`Na_2 S_2 O_3`

B

`Na_2 SO_4`

C

`Na_2 S`

D

`Na_2 S_2 O_7`

Text Solution

Verified by Experts

The correct Answer is:
A
Inorganic compound + `SO_2` in aq. Medium rarr `(A)`.
`(A) + Na_2 CO_3 rarr (B)`
`(B) + S rarr (c)` (Used in photography)
`Na_2 CO_3 + 2SO + H_2 O rarr 2 NaHSO_4 + CO_2`
`2 NaHSO_4 + Na_2 CO_3 rarr underset ((B)) (2 Na_2 SO_3) + H_2 O + CO_2`
`Na_2 SO_3 + S rarr underset((C)) (Na_2 S_2 O_3)`.
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