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When SO(2) is passed into an Na(2)CO(3) ...

When `SO_(2)` is passed into an `Na_(2)CO_(3)` solution, it produces

A

`NasO_(3)` and `CO_(2)`

B

`NaHSO_(4)` and `CO_(2)`

C

`NaSO_(3), NaHSO_(3)` and `CO_(2)`

D

`H_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
2
It is acidic oxide.it dissolves in water forming sulphuric acid, which is a stronger acid than carbonic acid.Therefore ,it decomposes carbonates and bicarbonates evolving `CO_(2)` gas:
`Na_(2)CO_(3)+2SO_(2)+H_(2)O rarr 2NaHSO_(3)+CO_(2)`
Like `CO_(2)` it truns lime water milky due to the formation of insoulble `CaSO_(3)` .However ,if `SO_(2)` is passed for a long time,milkness disappears due to the formation of soluble calcium bisulphite.
`Ca(OH)_(2)+SO_(2)rarr underset("Milkness")(CaSO_(3))+H_(2)O`
`CaSO_(3)+H_(2)O+SO_(2) underset("soluble")(Ca(HSO_(3))_(2))`
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