CAIE A Level Chemistry 9701 · Hydroxy compounds
A student prepares the ester ethyl ethanoate in two ways.
Method 1: ethanol is warmed with ethanoic acid and a few drops of concentrated .
Method 2: ethanol is added to ethanoyl chloride in a fume cupboard.
Compare these two methods for forming ethyl ethanoate, considering the conditions needed, the rate of reaction, and the atom economy.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
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