CAIE A-Level Chemistry AS Organic Chemistry Conventions and Functional Group Reference Questions

Practise reading syllabus organic notation and recognising functional groups from displayed, structural or skeletal formulae.

Exam points

interpret X as a halogen and R or R′ as alkyl groups or hydrogen in generic structures
identify each functional group from its defining atom sequence rather than from the compound name alone
distinguish aldehyde, ketone, acid and ester carbonyl environments in multifunctional molecules

Covered syllabus points

Reference—AS organic notation conventions Reference—AS organic functional groups

[Maximum number: 1]

Compound X contains an alcohol group and a carbonyl group.

compound X

Which row is correct?

type of

alcohol group

type of

carbonyl group

primary

aldehyde

primary

ketone

tertiary

aldehyde

tertiary

ketone

[Maximum number: 1]

Compound W has molecular formula $\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}$ . It contains only one functional group.

Y is a structural isomer of W.

Both W and Y produce colourless bubbles when sodium is added to them.
Y does not react when heated with acidified $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ .
Y does not react when warmed with alkaline $I_{2}(a q)$ .

Name the functional group present in Y.

[Maximum number: 1]

V shows stereoisomerism.

Fig. 6.1

Name all the functional groups present in V.

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Covered syllabus points

Question 1

Question 2

Question 3