Is fatty acid an acetic acid?

No, hydrochloric acid is not a fatty acid.It is a mineral acid. A fatty acid is that acid which has carboxyllic group attached to a long aliphatic chain. The aliphatic chain may or may not be...

Acetic acid is a weak acid because, like all other weak acids, it only disassociates partially in water (also known as incomplete ionisation).

it is sometimes known as ethanoic acid.... it is CH3COOH... it is around 3 on the pH scale..

Some are.

Acetic acid is a weak acid because it only ionises to a minimal extent in solution to produce hydrogen ions. CH3COOH <-> CH3COO- + H+ By definition, a weak acid is a substance which only...