Give the name and structural formula of one homologue of HCOOH.

13 Draw the structure for the following compounds:

(a) Ethanoic acid (b) Propanoic acid

14 Give the common names and IUPAC names of the following compounds:

(a) HCOOH

(b) CH₃COOH

16 Write the formulae of:

(a) methanoic acid, and

(b) ethanoic acid.

17 Give the common name and IUPAC name of C₂H₅OH.