O LevelChemistryCambridgeExam Questions11. Organic Chemistry11.4 Alkanes

Alkanes (Cambridge O Level Chemistry)

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11.4 Alkanes

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11.4 Alkanes

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11 mark

When the number of atoms in a molecule of a hydrocarbon increases, the amount of energy released when it burns increases.

What is the correct order?

 

less energy

→

more energy released

A

methane

ethene

ethane

B

ethene

ethane

methane

C

ethene

methane

ethane

D

methane

ethane

ethene

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    21 mark

    How many moles of hydrogen chloride are formed when one mole of methane reacts with a large excess of chlorine in sunlight?

    • 1

    • 2

    • 3

    • 4

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    11 mark

    The following reaction takes place in the presence of light.

    CH4 + Cl2 + light → CH3Cl + HCl

    What is the name for this reaction?

    • Combustion

    • Polymerisation

    • Thermal decomposition

    • Substitution

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