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CAIE A-Level Chemistry AS 3.6.3 Van Der Waals Forces As the Intermolecular Questions

Practise identifying temporary, permanent and hydrogen-bond attractions and explaining boiling points, melting points, vapour pressure and related properties in CAIE 9701 AS…

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Identify and compare intermolecular forces and use them to explain physical properties.

CAIE A-Level Chemistry AS 3.6.3 Van Der Waals Forces As the Intermolecular Questions question 1

[Maximum number: 1]

Consider the following four compounds.
1(CH3)3CH1\left(\mathrm{CH}_{3}\right)_{3} \mathrm{CH}2CH3CH2CH2OH2 \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}3CH3CH2CH2SH3 \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{SH}4CH3CH2CH2CH34 \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}
What is the order of increasing boiling point of the compounds (lowest first)?

A

1→4→2→31 \rightarrow 4 \rightarrow 2 \rightarrow 3

B

1→4→3→21 \rightarrow 4 \rightarrow 3 \rightarrow 2

C

4→1→2→34 \rightarrow 1 \rightarrow 2 \rightarrow 3

D

4→1→3→24 \rightarrow 1 \rightarrow 3 \rightarrow 2

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