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Chemistry · Oct / Nov 2020 · Paper 42 · Question 4

0620

As printed in the paper

The question as text

Alkenes and alkanes are homologous series of compounds containing carbon and hydrogen atoms.

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Show the answer and mark scheme
  • 4(a)[1]

    hydrocarbon

  • 4(b)(i)[1]

    (only) one product is formed

  • 4(b)(ii)[2]

    3 single bonded C atoms

    entire molecule correct

  • 4(b)(iii)[2]

    orange (1)

    to colourless (1)

  • 4(b)(iv)[2]

    structure of but-1-ene

    structure of but-2-ene

  • 4(c)[2]

    C3H8 + Cl 2 → C3H7Cl + HCl

    HCl as product

    rest of equation

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