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.

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

Name the polymer formed from ethene

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

Naphtha burns more easily than diesel oil. Explain why

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

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

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

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