ASSESSMENT ON ALKANES, ALKENES AND RATE OF REACTION

Alkenes can be made by cracking large alkane molecules. Explain how the cracking process is carried out.

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Give a chemical test which would show the difference between an alkene and an alkane

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Name the polymer formed from ethene

Explain one important problem caused by the everyday use of the polymer formed from ethene.

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Naphtha burns more easily than diesel oil. Explain why

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Naphtha contains a saturated hydrocarbon with the formula C7H16 . Draw the structural formula of this compound.

Answer explanation

Ethene is produced by cracking the hydrocarbons in the naphtha fraction. Balance the symbol equation for this reaction.

C10H22 decane → C4H10 butane + C2H4 ethene

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Alkenes are unsaturated hydrocarbons. What does the term unsaturated mean?

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Alkenes can be burned but they tend to burn with smoky flames. Why do they burn with smoky flames?

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Hexene is an alkene with six carbon atoms. Give the molecular formula of hexene