CAIE A Level Chemistry 9701 · Hydroxy compounds
A student adds ethanol to ethanoyl chloride in a dry test tube. White fumes are produced and a liquid ester, ethyl ethanoate, forms.
Suggest why the reaction is carried out in a dry test tube and why white fumes are produced. Suggest how the student could confirm that the liquid formed is ethyl ethanoate, and suggest a safety precaution for this experiment.
6 marks, so the mark scheme is looking for about 6 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.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.