DP Chemistry (last assessment 2024)

Question 20N.2.sl.TZ0.1d(iii)

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.2.sl.TZ0.1d(iii)
Level	sl	Paper	2	Time zone	TZ0
Command term	Formulate	Question number	d(iii)	Adapted from	N/A

d(iii).

[Maximum mark: 1]

20N.2.sl.TZ0.1d(iii)

Chlorine undergoes many reactions.

(d(iii))

Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.

[1]

Markscheme

${CH}_{3} {CH}_{2} Cl (l) + {OH}^{-} (aq) \to {CH}_{3} {CH}_{2} OH (aq) + {Cl}^{-} (aq)$
OR
${CH}_{3} {CH}_{2} Cl (l) + NaOH (aq) \to {CH}_{3} {CH}_{2} OH (aq) + NaCl (aq)$ ✔

Accept use of $C_{2} H_{5} C l$ and $C_{2} H_{5} O H / C_{2} H_{6} O$ in the equation.

Examiners report

Half of the candidates wrote the correct equation for the hydrolysis of chloroethane. Incorrect answers often included carbon dioxide and water as the products.

Syllabus sections

Core

Core » Topic 10: Organic chemistry » 10.2 Functional group chemistry

Core » Topic 1: Stoichiometric relationships » 1.1 Introduction to the particulate nature of matter and chemical change

Core » Topic 1: Stoichiometric relationships

Core » Topic 10: Organic chemistry

Question 20N.2.sl.TZ0.1d(iii)

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