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Question
When a sulphite reacts with an acid, the gas evolved is ______.
Options
oxygen
hydrogen
sulphur dioxide
carbon dioxide
MCQ
Fill in the Blanks
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Solution
When a sulphite reacts with an acid, the gas evolved is sulphur dioxide.
Explanation:
Treatment of a sulphite salt with a dilute acid yields salt, water, and sulphur dioxide (SO2) gas.
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