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12.3 Amphoteric Substance
A substance which can act either as an acid or a base, depending on the nature of the other substance is called an amphoteric substance or amphiprotic.
Water can accept a proton and can act as a base. Similarly it can donate a proton and act as an acid.
HCl (g) + H2O H3O+
(g) + H2O NH4+
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Lowry and Bronsted Concept12.2 -
Conjugate Acid Base Pairs12.3 -
Amphoteric Substance12.4 -
Lewis Acids and Bases12.5 -
Strong and Weak Acids and Bases12.6 -
Ostwald's Dilution Law12.8 -
Hydrogen Ion Concentration : pH12.9 -
Polyprotic Acids12.10 -
Methods of Preparation of Salts12.12 -
Properties of Salts