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Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section

Structural isomerism in the alkanes

19 practice questions

Start practising (3 questions)

Practice questions

1–3 of 3 · Hard

  1. Question 1

    2 marks · Hard

    Explain why two different molecules with the formula C6H14 are considered structural isomers.

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  2. Question 2

    5 marks · Hard

    This question is about structural isomerism in the alkanes.

    (a)

    Complete the following table for alkanes, giving the number of possible structural isomers for each formula.

    Molecular formulaNumber of structural isomers
    C3H8
    C4H10
    C5H12
    [3 marks]
    (b)

    Explain why C5H12 has more structural isomers than C3H8.

    [2 marks]
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  3. Question 3

    2 marks · Hard

    Explain why it is not possible to have a structural isomer of methane (CH4).

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