Question

Give reasons for the following:

Sulphurous acid forms two types of salts on reaction with an alkali.

  • Acids Bases and Salts
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Answer

Sulphurous acid (H2SO3) is a dibasic acid, i.e., it contains two replaceable hydrogen ions per molecule of the acid. Hence, it can form normal salt as well as acid salt on reaction with an alkali.

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