Question $2(20$ marks$)$

a$.$ A polypropilene plant is in operation producing the homopolymer wants to switch to eopolymar production, briefly explain the steps needed to start high impact copolymer production.

b$.$ In a polypropylene plant, $500kg$ of copolpmer lot was collected from the starage silo for analysis. The lot showed $12$ & wt$.$ ethylene bonded in the copolymer, the homopolymer part produced in the homopolymer loop reactors have rylene soluble of $3\mathrm{.}5\%,$ IV $($intrinsic viscesiny$)$ of $2\mathrm{.}2,929$ ratio in the gas phase reactor is $0\mathrm{.}45,$ reactivity ratio is $3\mathrm{.}5,$ and the final copolymer total rylene soluble is $15\mathrm{.}5$$ Note. for bipolymer, $65$ s othylane in bipolymer corresponds to $70$ &s sylene?

Calculate the following:

i$.$ Etrglenerpropylone wt$.$ ratio in biopolymer

ii$.\%$ ethylene in bipolymes

ii$.$ Tocal weight of bipolymer in the $500kg$ copolymet lof

iv$.$ Sof homopolymer and percemage of bipolymer in the $500kg$ copolymer lot

$.$ Weighn in kg of xylene soluble in homopolymer fraction and bipolymer fraction

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apcria $1$ Exartason

vi$.$ Totel expected sylene soluble in the copolymer lot.