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IB Chemistry HL 3.2.11 Reduction of unsaturated compounds Question Bank

Practise IB Chemistry HL 3.2.11 by applying reduction of unsaturated compounds to exam-style questions.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • identify the relevant chemical structure, process or evidence
  • apply the correct chemical model or equation
  • evaluate the result using chemical reasoning and data

3.2.11—Reduction of unsaturated compounds question 1

[Maximum number: 2]

Alkenes, such as A (shown below), are important intermediates in the petrochemical industry because they undergo addition reactions to produce a wide variety of products, such as the conversion shown below.

Figure for Question 3.2.11—Reduction of unsaturated compounds question 1 — IB Chemistry HL

Question (a)

(a)

In the gas phase, A reacts with hydrogen to form D :

Figure for Question (a) — IB Chemistry HL
[ 2 ]

Question (i)

(i)

State the conditions required for this reaction to occur.

[ 1 ]

Question (ii)

(ii)

Outline a use for hydrogenation reactions like this in the manufacture of foodstuffs.

[ 1 ]
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