Chemistry 0620 · IGCSE · Carboxylic acids

Carboxylic acids — practice question

This question concerns carboxylic acids and alkanes.
(a(i))[1]

State how the boiling points of the carboxylic acids change.

(a(ii))[1]

Deduce the general formula for carboxylic acids.

(b(i))[2]

Complete the word equation for the reaction of ethanoic acid with sodium carbonate: ethanoic acid + sodium carbonate → sodium ethanoate + [BLANK] + [BLANK].

(b(ii))[1]

Choose the correct formula of sodium ethanoate from the list: CH$_3$CH$_2$ONa, CH$_3$CH$_2$COONa, CH$_3$COONa, (CH$_3$COO)$_2$Na.

(c(i))[2]

Define the term homologous series.

(c(ii))[1]

State the type of bonding in a methane molecule.

(c(iii))[2]

State two types of reaction of the alkanes.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: boiling point increases with number of carbon atoms / down the series

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI