Chemistry 9701 · AS & A Level · Carbonyl compounds
Carbonyl compounds — practice question
Ketones are used extensively as solvents and as starting materials in the chemical industry. They contain the reactive keto group, $\mathrm{C{=}O}$. Propanone, $\mathrm{CH_3COCH_3}$, reacts with hydrogen cyanide, $\mathrm{HCN}$.
(a(i))[1]
What kind of reaction is this?
(a(ii))[1]
Which reagents are employed?
(a(iii))[1]
Draw a diagram to illustrate the dipole in the propanone molecule.
(b(i))[3]
Write a balanced equation for the reaction between propanone and 2,4-dinitrophenylhydrazine.
(b(ii))[3]
A related reaction happens between propanone and hydroxylamine, $\mathrm{NH_2OH}$. Draw the displayed formula of the organic product formed in this reaction.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “nucleophilic addition” …