State why the basicity of acetic acid is one and acidity of calcium hy

1.	State why the basicity of acetic acid is one and acidity of calcium hydroxide is two.
Answer» Basicity of an acid is the number of hydrogen ions which can be produced from one molecule of the acids on complete dissociation. Acetic acid, CH.COOH gives one H⁺ per molecule the acid, hence acetic acid is monobasic i.e., its basicity is one. CH₃COOH (aq) ⇋ CH₃COO^-(aq) + H⁺ (aq) Acidity of a base is the number of hydroxyl ions which can be produced from one molecule of the base on complete dissocation. Ca(OH)₂ (calcium hydroxide) gives two hydroxyl ions per molecule of the base, hence calcium hydroxide is diacidic i.e., its acidity is two.

State why the basicity of acetic acid is one and acidity of calcium hydroxide is two.

Answer»

Basicity of an acid is the number of hydrogen ions which can be produced from one molecule of the acids on complete dissociation. Acetic acid, CH.COOH gives one H⁺ per molecule the acid, hence acetic acid is monobasic i.e., its basicity is one.

CH₃COOH (aq) ⇋ CH₃COO^-(aq) + H⁺ (aq)

Acidity of a base is the number of hydroxyl ions which can be produced from one molecule of the base on complete dissocation. Ca(OH)₂ (calcium hydroxide) gives two hydroxyl ions per molecule of the base, hence calcium hydroxide is diacidic i.e., its acidity is two.

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