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Saturated hydrocarbons.
Petroleum is a mixture that consists of mainly alkane hydrocarbons that can be separated by
fractional distillation.
Cracking involves breaking CC bonds in alkanes.
Thermal cracking happens at high pressure and high temperatures. It produces a high % of

Catalytic cracking takes place at a slight…

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CaO(s) + SO CaSO
2(g) 3(s)

Chlorination of Alkanes
Halogens react with alkanes in photochemical reactions to form halogenoalkanes. Photochemical
reactions are reactions started by UV.
A H atom substituted by Cl or Br. This is a free radical substitution.
A free radical is particle with unpaired e.

Free radical…


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