ConceptConceptDocsDocuments

Pearson Edexcel IAL Chemistry 4.9 Alkanes & cycloalkanes

Practise recognising alkanes and cycloalkanes as saturated hydrocarbons, using formulae, molar mass and bromine water observations.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • state that hydrocarbons contain carbon and hydrogen only, with saturated species having single bonds
  • use general formulae and molar mass to deduce alkane or cycloalkane molecular formulae
  • link no colour change with bromine water to a saturated hydrocarbon structure

4.9—The general formula of alkanes and cycloalkanes, and understand that they are hydrocarbons (compounds of carbon and hydrogen question 1

[Maximum number: 2]

This question is about cycloalkanes.

Question (a)

(a)

The skeletal formula of cycloalkane D is shown.

Figure for Question (a) — Edexcel A-Level Chemistry AS
[ 1 ]

Question (i)

(i)

Give the molecular formula of D.

[ 1 ]

Question (b)

(b)

A cycloalkane, E, has a molar mass of 126 g mol−1126 \mathrm{~g} \mathrm{~mol}^{-1}.

Deduce the molecular formula of E.

[ 1 ]
All question bank results loaded