Chemistry 5070 · O Level · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

Lavandulol occurs in lavender plants.
(a(i))[1]

State the molecular formula of lavandulol.

(a(ii))[1]

Lavandulol contains an -OH group. Name the homologous series of compounds that contain the -OH group.

(b)[2]

Lavandulol is an unsaturated compound. Describe a test for an unsaturated compound. Give the test and the result.

(c)[3]

Lavender flowers contain several coloured compounds. These may be extracted from the flowers to form a solution of the coloured compounds. Explain how paper chromatography can be used to identify these coloured compounds. A labelled diagram may be included in your response.

(d)[2]

Compound G is present in the leaves of lavender plants. Compound G can polymerise. Draw a section of the polymer to show two repeat units.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Molecular formula: C₁₀H₁₈O

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