Chemistry 9701 · AS & A Level · Carboxylic acids and derivatives

Carboxylic acids and derivatives — practice question

The skeletal formula for E is given in Fig. 4.1.
(a)[1]

State the molecular formula of E.

(b)[1]

Name E.

(c(i))[1]

E is produced when a carboxylic acid and an alcohol react together. Name the reaction type taking place in this esterification reaction.

(c(ii))[1]

Write an equation for the production of E from a carboxylic acid and an alcohol. Represent the organic species using structural formulae.

(c(iii))[1]

State the systematic name of the alcohol used to make E.

(d(i))[1]

F is an isomer of E. F reacts with $\text{HCl}(\text{aq})$ to make G and H. G is a secondary alcohol. H is also obtained when $\text{HCl}(\text{aq})$ is added to $\text{CH}_3\text{CN}$. Construct an equation for the acid hydrolysis of $\text{CH}_3\text{CN}$ with $\text{HCl}(\text{aq})$.

(d(ii))[2]

Draw the displayed formula of G.

(d(iii))[3]

$\text{CH}_3\text{OH}$ is used to make $\text{CH}_3\text{CN}$ in a two-step process, as shown in Fig. 4.2. $\text{CH}_3\text{OH} \xrightarrow{\text{step 1}} \text{CH}_3\text{Cl} \xrightarrow{\text{step 2}} \text{CH}_3\text{CN}$. State the reagents and conditions required for steps 1 and 2.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: Molecular formula shown is $\mathrm{C_5H_{10}O_2}$

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