A-LevelChemistryHydrocarbons9701/12 · May/June 2018 · Q211 Mark

Which equation represents a valid propagation step in the chlorination of ethane?

AC2H6 + Cl• → C2H5Cl + H•

BC2H5Cl + Cl• → C2H4Cl + HCl

CC2H5Cl + H• → C2H5 + HCl

DC2H5 + Cl• → C2H5Cl

✓ Correct answer

B: C2H5Cl + Cl• → C2H4Cl + HCl

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Topic: Hydrocarbons, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 21.

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