22. (a) Decane is a long chain alkane which can be cracked to form more useful products.
(i) Copy and complete the following equation to describe the cracking of decane to produce butane and compound X: C10H22(l) → C4H10(g) + X(l) (1 mark)
A. Usefulness of cracking of decane:Some of the smaller hydrocarbons formed by cracking are used as fuels (eg large chains are often cracked to form octane for petrol, which is in high demand), and the alkenes are used to make polymers in the manufacturing of plastics. Sometimes, hydrogen is also produced during cracking.
1.Decane on cracking gives butane and an alkene with it.The alkene can easily be found by balancing the reaction.The alkene comes out to be Hexene.