Acetic acid in the vapour state has a molecular weight of 120 because

Why acetic acid in the vapour state has a molecular weight of 120 instead of 60 ?

Account for the following: (a) Boiling points of carboxylic acids are higher than those of corresponding alcohols. (b) The C-O bond in R-COOH is shorter than in R-OH (c ) Acetic acid in the vapour state has a molecule mass of 120.

Acetic acid exists in the vapour phase as

(A) Acetic acid in vapour state shows a molecular mass of 120. (R) It undergoes intermolecular hydrogen bond & forms a dimer.

The boiling point of acetic acid is higher than expected from its molecular weight, because of

The boiling point of acetic acid is higher than expected from its molecular weight because of