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Polymerisation of alkenes
An addition reaction is one in which two or more molecules join together to give a single product. During the
polymerisation of ethene, thousands of ethene molecules join together to make poly(ethene) - commonly
called polythene.

nCH2=CH2 ==> -(-CH2-CH2-)-n ]

Polyalkenes such as low density poly(ethene) can…

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Of course, there is other atmospheric chemistry which could remove the Cl radical, namely its reaction with
hydrocarbons, such as methane, or with water (H2O) to produce HCl:
CH4 + Cl --> HCl

H2O + Cl --> HCl
The HCl should be removed as hydrochloric acid (aqueous HCl) - acid…


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