CAIE A Level Chemistry 9701 · An introduction to organic chemistry

An introduction to organic chemistry: describe question

Describe7 marksChallenge

Two organic compounds are described below.

Compound A is an aliphatic compound with a straight chain of four carbon atoms. It contains a chlorine atom attached to the second carbon atom and a hydroxyl group attached to the third carbon atom. The compound is saturated.

Compound B is an aromatic compound. It contains a benzene ring with a nitro group at position 3 and a carboxylic acid group at position 1.

(a) Describe the functional groups present in compound A and in compound B.

(b) Explain how the functional groups in compound A affect its boiling point and its solubility in water, compared to an alkane of similar molar mass.

(c) State the systematic IUPAC name of compound A and of compound B.

0 words · 7 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

7 marks, so the mark scheme is looking for about 7 separate creditworthy points. Making the same point twice in different words earns it once.

Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.

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