Question
Define :

Weak Acid

Answer

On dissolving in water a weak acid does not dissociate completely, and the resulting aqueous solution contains $H +$ ion and the concerned acidic radical in small proportion along with large proportion of the undissociated molecules of the acid, e.g., $H _2 CO _3$ (Carbonic acid), $CH _3 COOH$ (Acetic acid)

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