1.

What is HDPE? Give its preparation and use.

Answer»

Solution : (i) HDPE is high density polyethylene. It is prepared by the POLYMERISATION of ethylene at 373k and 6 to 7 ATM. USING zeiglar Natta Catalyst)
`underset([TiCl_4 + (C_2H_5)_3 AL])(nCH_2=CH_2 underset(6-7 "atm. Pr.")overset(373K)to (--CH_2 -CH_2--)_n)`
(iii) It is used to make bottles, pipes.


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