Carboxylic acids and derivatives — Chemistry 9701 AS & A Level Question & Worked Solution

(a(i))[1]

State a suitable reagent for changing carboxylic acids into acyl chlorides.

(a(ii))[1]

Write an equation for the reaction of ethanoic acid, $\text{CH}_3\text{CO}_2\text{H}$, with the reagent you gave in (i).

(b(i))[2]

In the spaces provided, draw the structures of the compounds produced when benzoyl chloride undergoes reaction I with $\text{C}_2\text{H}_5\text{OH}$ and reaction II with $\text{NH}_3$.

(b(ii))[1]

Name the functional group in compounds A and B.

(b(iii))[1]

What kind of reaction is reaction II?

(c(i))[2]

Suggest suitable acyl chlorides for use in the reaction below and draw their structures in the boxes provided.

(c(ii))[1]

Suggest the main type of intermolecular interaction between E and water.

(c(iii))[1]

A solution of the diamine $\text{H}_2\text{NCH}_2\text{CH}_2\text{NH}_2$ in water has pH = 11 but a solution of E in water has pH = 7. Suggest why this is the case.

(c(iv))[1]

What sort of polymer is compound F?

Carboxylic acids and derivatives — practice question

Worked solution & mark scheme