DP Chemistry (last assessment 2024)

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Question 22M.2.sl.TZ1.f(ii)

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

Magnesium is a reactive metal often found in alloys.

Iodomethane is used to prepare CH3MgI. It can also be converted into methanol:

CH3I + HO– → CH3OH + I–

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

[2]

Markscheme

energy/E ≥ activation energy/Ea ✔

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

Examiners report

Generally well done with the vast majority of students correctly citing "correct orientation" and many only failed to gain the second mark through failing to equate the energy required to the activation energy.

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