Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

Compound R is illustrated.
(a)[1]

State the systematic name assigned to compound R.

(b(i))[2]

R is dissolved in CDCl$_3$ and then examined by carbon-13 and proton NMR spectroscopy. Predict how many peaks appear in the carbon-13 NMR spectrum of R. Predict how many peaks appear in the proton NMR spectrum of R.

(b(ii))[1]

A separate sample of R is dissolved in D$_2$O. The proton NMR spectrum of this solution has one fewer peak than the spectrum obtained in CDCl$_3$. Explain why.

(c)[6]

Compound $R$ reacts separately with the four reagents listed in the table. Complete the table by drawing the structures of the organic products formed and stating the type of reaction.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: 4-chloro-3,5-dimethylphenol (or a correctly equivalent name)

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