Edexcel IAL Chemistry 10.6 Halogenoalkane nomenclature and formulae

Choose the longest carbon chain, number for the lowest substituent set and alphabetise prefixes, then draw exactly the formula representation requested.

Exam points

Name halogenoalkanes with correct parent chain, halo and alkyl locants and prefix order.
Draw the requested skeletal or displayed formula from an IUPAC halogenoalkane name.

[Maximum number: 2]

This question is about bromoalkanes with the molecular formula $\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}$ .

(a)

Give the IUPAC name of the only $\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}$ tertiary bromoalkane.

[ 1 ]

(b)

Draw the displayed formula of the only $\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}$ secondary bromoalkane.

[ 1 ]

An answer that makes reference to the following point:

- displayed formula of 2-bromobutane

Example of displayed formula:

Figure for Answer to Question (b) — Edexcel A-Level Chemistry AS

Ignore any other type of formula Ignore bond lengths and bond angles Ignore any name even if incorrect

Do not award non-displayed $\mathrm{CH}_{3}$ groups Do not award any missing hydrogens / bonds

(1)

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10.6—The nomenclature of halogenoalkanes question 1

Question (a)

Question (b)