Activity 2K (Textbook) – Chemistry Form 5 Chapter 2 (Carbon Compound)

Activity 2K:
Write the molecular and structural formulae of alcohol and carboxylic acid components for the following esters. Next, draw the structural formula of each of these esters.
(i) Methyl methanoate
(ii) Ethyl propanoate
(iii) Propyl ethanoate

Answer:
(i) Molecular formula of alcohol component: CH₃OH
Molecular formula of carboxylic acid component: HCOOH



(ii) Molecular formula of alcohol component: C₂H₅OH
Molecular formula of carboxylic acid component: C₂H₅COOH


(iii) Molecular formula of alcohol component: C₃H₇OH
Molecular formula of carboxylic acid component: CH₃COOH