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Oxides of Sulphur

Sulfur dioxid...

Question

Sulfur dioxide can be anhydride for which of the following?

A

Sulfurous acid

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B

Hyposulfurous acid

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C

Sulfuric acid

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D

Hydrosulfuric acid

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Solution

The correct option is A Sulfurous acid
Sulphur dioxide $S O_{2}$ can be anhydride of sulfurous acid $H_{2} S O_{3}$ .
Sulfurous acid is prepared by dissolving sulphur dioxide in water.
$S O_{2} + H_{2} O \to H_{2} S O_{3}$

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