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What is observed when sulphur dioxide is passed through water?

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Sulphurous acid is formed

Nitric acid is formed

Sulphurous acid is formed

Aqueous solution of sulphur dioxide gas is formed

answer is D.

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Detailed Solution

When sulphur dioxide is passed through water then sulphurous acid is formed.
Non-metallic oxides are acidic in nature. Therefore, when they are dissolved in water formation of acid takes place.

${SO}_{2} + H_{2} O \to H_{2} {SO}_{3}$

When sulphur dioxide gas is passed through water formation of sulphurous acid takes place which turns blue litmus red.

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