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Edexcel A-Level Chemistry AS 4.5 Apply the Rules of International Union of Pure and Applied Chemistry Iupac Nomenclature to I Name Compounds Relevant Questions

Practise converting between structures, formulae and IUPAC names for specification organic compounds and substituted chains.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • choose the longest carbon chain and locants to name branched hydrocarbons correctly
  • give molecular, empirical or structural formulae from named compounds or displayed structures
  • apply IUPAC prefixes, suffixes and E/trans notation to substituted alkenes and oxygenated compounds

Edexcel A-Level Chemistry AS 4.5 Apply the Rules of International Union of Pure and Applied Chemistry Iupac Nomenclature to I Name Compounds Relevant Questions question 1

[Maximum number: 2]

Terpenes and terpenoids are groups of chemicals found in plants.
They contribute to the smell and taste of the plant, and so are used in flavourings and perfumes.

Both terpenes and terpenoids have carbon skeletons based on one or more units of the compound isoprene.

Figure for Question Edexcel A-Level Chemistry AS 4.5 Apply the Rules of International Union of Pure and Applied Chemistry Iupac Nomenclature to I Name Compounds Relevant Questions question 1 — Edexcel A-Level Chemistry AS

isoprene
Terpenes are made up of two or more isoprene units joined together, while terpenoids have additional functional groups, often containing oxygen.

Limonene and myrcene are both terpenes composed of two isoprene units.
Menthol, linalool and citronellol are terpenoids containing an - OH group.

Question (a)

(a)

Give the IUPAC name for isoprene.

[ 1 ]

Question (b)

(b)

Give the IUPAC name of the product formed by complete hydrogenation of myrcene.

[ 1 ]
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