QQuestion
How is polyethene produced by the polymerisation reaction of ethylene?
OR
How can the following conversion be carried out?
HC = CH → CH3CH3
✓Answer
Polymerisation of ethylene: Ethylene is liquified at high pressure (1500-2000 atm). In the presence of catalysts such as peroxide, oxygen or chromium oxide and at temperatures 150℃-200℃, a large number of ethylene molecules join to form a white solid called polyethylene or polythene.
nC2H4→(C2H4)n
OR
The conversion of ethyne (HC≡CH) to ethane (CH₃CH₃) can be carried out through hydrogenation using platinum (Pt) as a catalyst.
HC = CH + H2 {\overset{Pt}{\longrightarrow}} CH3CH3
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