(i) CH3CO2H or CH2FCO2H
(ii) CH2FCO2H or CH2ClCO2H
(iii) CH2FCH2CH2CO2H or CH3CHFCH2CO2H
Methanoic acid is used in rubber, textile, dyeing, leather and electroplating
industries Ethanoic acid is used as solvent and as vinegar in food industry Hexanedioic acid is used in the manufacture of nylon-6, 6 Esters of benzoic
acid are used in perfumery