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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`

B

`Na_(2)S_(2)O_(7)`

C

`Na_(2)SO_(4)`

D

`Na_(2)S_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`SO_(3)^(2-) +Na_(2)CO_(3) rarr Na_(2)SO_(3) overset(S)rarr Na_(2)S_(2)O_(3)` (Used in photography)
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