Question

why formate ion is more acidic than acetate ion

Answer 1

Hey Friend,
Here is your answer,

Carboxylic acid after realising H+ ion is called as carboxylate ion. So, we can compare the stability of formate ion and acetate ion.
Both formate ion and acetate ion have equally contributing Resonating structures.

Thus, Formate acid is more acidic than acetate acid.

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