CAIE A Level Chemistry 9701 · Hydroxy compounds
Butane-1,3-diol is a diol with one primary alcohol group and one secondary alcohol group. Butane-1,2-diol has two primary alcohol groups. Both are separately refluxed with an excess of acidified potassium dichromate().
Compare the products formed from each diol under these conditions.
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.
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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