When Sulphur dioxide is passed through water, ____ acid is formed.

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Detailed Solution

When Sulphur dioxide is passed through water, sulphurous acid is formed.
The said reaction can be represented as follows:

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

Sulphur dioxide + water → sulphurous acid.
Sulphurous acid is used in producing fertilisers, detergents, explosives, pigments, dyes, medicines, and inorganic salts and acids, as well as in petroleum's refining and metallurgical processes.

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