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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

Use marked Edexcel IAL Chemistry questions to convert among formulae, structures and IUPAC names, choosing locants, prefixes, suffixes and E/trans notation.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Choose the longest carbon chain and locants to name branched hydrocarbons correctly.
  • Convert between molecular, empirical, displayed, structural and skeletal formulae.
  • Apply IUPAC prefixes, suffixes and E/trans notation to substituted 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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