CAIE A Level Chemistry 9701 · Carbonyl compounds
A student has two unlabelled bottles, one containing propanal and the other containing propanone. Suggest how the student could use Fehling's reagent to identify which bottle contains propanal. Explain the result expected for each compound.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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