A-LevelChemistryAnalytical techniques9701/12 · May/June 2018 · Q381 Mark

Which pairs of compounds may be distinguished from each other by testing with alkaline aqueous iodine? 1 ethane-1,2-diol and ethanol 2 propan-2-ol and methylpropan-2-ol 3 ethanol and butan-2-ol

A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

B: 1 and 2 only are correct

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Topic: Analytical techniques, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 38.

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