The basicity of acids

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What is Basicity of Acids


The basicity of an acid is the number of hydrogen ions, which can be produced by one molecule of the acid. The table below shows some acids and their basicity.



HCl        H+ + Cl-

H2SO4 2H+ + SO42-

H3PO4     3H+ + PO42-


1 Monobasic

2 Monobasic

3 Monobasic

1 Monobasic


Note: It isn’t in all cases that a compound furnishes all its containing hydrogen atoms as ions. Example, in ethanoic acid.

When 1 mole of hydrogen ions is furnished from 1 mole of an acid, the acid is monobasic; it is dibasic when 2 moles of hydrogen ions are furnished, and tribasic when 3 moles of hydrogen ions are furnished from 1 mole of its solution.

Related Tutorials

The Concepts of Acids and Bases
How to Determine Strength of Acids
Properties of Acids
Uses of Acids
Methods of Preparation of Acids
The BrØnsted-Lowry Concept of Acids And Bases
The Lewis Concept of Acids and Bases

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