Question

Ethanoic acid is a weak acid? why.

Answer 1

A weak acid is one which doesn't ionise fully when it is dissolved in water. Ethanoic acid is a typical weak acid. It reacts with water to produce hydroxonium ions and ethanoate ions, but the back reaction is more successful than the forward one. The ions react very easily to reform theacid and the water

Answer 2

A weak acid is one which doesn't ionise fully when it is dissolved in water.It reacts with water to produce hydroxonium ions and ethanoate ions, but the back reaction is more successful than the forward one. The ions react very easily to reform the acid and the water.
Because it exists as an equilibrium between the “acid” and “base” states. Chemically:

AcH <=> Ac- + H+

In aqueous solutions, the conjugate base (Ac-) remains at least partially protonated.

In contrast, a strong acid goes to completion:

HCl -> H+ Cl-



It does not go backwards (at least not appreciably).