Question

Give reasons for the following:
Sulphurous acid forms two types of salts on reaction with an alkali.

July 30, 2024

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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The questions below refers to the following salt solutions listed A to F:
A: Copper nitrate
B: Iron [II] sulphate
C: Iron [III] chloride
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(ii) Which solution gives a white precipitate with excess ammonium hydroxide solution.

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Concentrated sulphuric acid is a weaker acid compared to dilute sulphuric acid.

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The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide.

1. Name the apparatus ‘A’.
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B: Monobasic acid
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D: Weak acid
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Give reasons for the following: Sulphurous acid forms two types of salts on reaction with an alkali.

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Give reasons for the following:
Sulphurous acid forms two types of salts on reaction with an alkali.