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Edexcel A-Level Chemistry AS 4.9 The General Formula of Alkanes and Cycloalkanes and Understand That They Are Hydrocarbons Compounds of Carbon and Hydrogen Questions

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

Edexcel A-Level Chemistry AS 4.9 The General Formula of Alkanes and Cycloalkanes and Understand That They Are Hydrocarbons Compounds of Carbon and Hydrogen Questions 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 ]
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