Question

Isomerism exhibit by ethanoic acid and acetic acid

Answer 1

Isomers are the organic compounds having same molecular formula but different molecular structure.

Acetic Acid-- CH3OOH  and methyl Formate are functional isomers.

They have same molecular formula : C2H4O2
Acetic acid --- Belongs to carboxylic groups with -COOH group.       
        O         
        II
H3C-C-OH

Methyl Formate is an ester with group ---COOCH3 group:     
     O   
     II
H- C-OCH3