Give the IUPAC name of the following organic compounds: [2] i) (CH 3) 3C OH [1] ii) CH 3COOCH 3 [1]

i) The given compound is $(\mathrm{CH}{}_3){}_3\mathrm{C}-\mathrm{OH}$. This is a tertiary alcohol with three methyl groups attached to the central carbon bearing the hydroxyl group. The longest carbon chain is three carbons (propane), and the hydroxyl group is attached to the second carbon. The IUPAC name is 2-methylpropan-2-ol.

PropanePropane

ii) The given compound is $\mathrm{CH}{}_3\mathrm{COOCH}{}_3$. This is an ester formed from acetic acid ($\mathrm{CH}{}_3\mathrm{COOH}$) and methanol ($\mathrm{CH}{}_3\mathrm{OH}$). The IUPAC name is derived by naming the alkyl group from the alcohol (methyl) followed by the name of the acid with the ending -oate. Thus, the IUPAC name is methyl ethanoate.

Acetic acidAcetic acidMethanolMethanol