DP Chemistry (last assessment 2024)

Question 22M.2.hl.TZ1.5d(ii)

Date	May 2022	Marks available	[Maximum mark: 2]	Reference code	22M.2.hl.TZ1.5d(ii)
Level	hl	Paper	2	Time zone	TZ1
Command term	Outline	Question number	d(ii)	Adapted from	N/A

d(ii).

[Maximum mark: 2]

22M.2.hl.TZ1.5d(ii)

Organomagnesium compounds can react with carbonyl compounds. One overall equation is:

Iodomethane is used to prepare CH₃Mg $I$ . It can also be converted into methanol:

CH₃ $I$ + HO^– → CH₃OH + $I$ ^–

(d(ii))

Outline the requirements for a collision between reactants to yield products.

[2]

Markscheme

energy/E ≥ activation energy/E_a ✔

correct orientation «of reacting particles»
OR
correct geometry «of reacting particles» ✔

Examiners report

Good performance. For the requirements for a collision between reactants to yield products, some suggested necessary, sufficient or enough energy or even enough activation energy instead of energy/E ≥ activation energy/E_a.

Syllabus sections

Core

Core » Topic 6: Chemical kinetics » 6.1 Collision theory and rates of reaction

Core » Topic 6: Chemical kinetics

Question 22M.2.hl.TZ1.5d(ii)

Select a Test

Syllabus sections

Confirm action