Ethanoic acid is weaker acid than benzoic acid.Why ?

Explanation

Acidity order is as followes :
`underset("Benzoic acid")(C_6H_5COOH) gt underset("Acetic acid") (CH_3COOH)`
`:.` In benzoic acid COOH group is attached to `sp^2` hybridized carbon of phenyl ring and in acetic acid `COOH` group is attached to the `sp^3` hybridized Carbon-atom of methyl group. As jn benzoic acid double bond of benzene ring is Jess electron donating and delocalisation destroys the aromatic character of benzene ring. It ma.kes benzoic acid a stronger acid than acetic acid.