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Depression in Freezing Point

Which of the ...

Question

Which of the following compound is formed as the biproduct when some acid is poured in a solution containing sulphite ion?

A

Sulphur dioxide

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B

Sulphur trioxide

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C

Sulphur trioxide + colloidal sulphur

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D

none of the above

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Solution

The correct option is A Sulphur dioxide
When sulfite ion reacts with acids,it produce sulphurdioxide.
The $S O_{2}$ will come off as gas leaving salt solution behind.

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