Based on their basicity, acids are classified as:
Monobasic, dibasic and tribasic acids.
Based on their basicity, acids are classified as monobasic, dibasic and tribasic acids. A monobasic acid is an acid that has only one hydrogen ion to donate to a base in an acid-base reaction. Similarly a dibasic acid will donate two and tribasic will donate three hydrogen ions in a reaction.