DP Chemistry (last assessment 2024)

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Question 21M.1.sl.TZ2.27

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1.sl.TZ2.27
Level sl Paper 1 Time zone TZ2
Command term State Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
21M.1.sl.TZ2.27

Which is a propagation step in the free-radical substitution mechanism of ethane with chlorine?

A.  Cl2 → 2 •Cl

B.  •C2H5 + Cl2 → C2H5Cl + •Cl

C.  •C2H5 + •Cl → C2H5Cl

D.  C2H6 + •Cl → C2H5Cl + •H

[1]

Markscheme

B

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