Chemistry 0620 · IGCSE · Alcohols

Alcohols — practice question

(a(i))[1]

Circle the carboxylic acid functional group on Fig. 4.1.

(a(ii))[1]

Work out the molecular formula of compound A.

(b)[2]

Fill in Table 4.1 to calculate the relative molecular mass of C$_5$H$_{11}$NO$_3$.

(c(i))[1]

Give the name of the homologous series that contains methanol, ethanol, propanol and butanol.

(c(ii))[1]

Work out the general formula for this homologous series.

(c(iii))[1]

State how the boiling point of this homologous series changes as the number of carbon atoms increases.

(d(i))[4]

Ethanol is made by an addition reaction. Name two substances and state two conditions needed.

(d(ii))[1]

Draw the displayed formula for ethanol.

(d(iii))[1]

Name the poisonous gas formed when ethanol burns incompletely.

Worked solution & mark scheme

This 13-mark question has a full step-by-step worked solution and mark scheme. One marking point: The $\text{COOH}$ group has been circled.

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