A escriba la ecuaci ó n qu í mica de la reacci ó n

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8. a) Escriba la ecuaci ó n qu í mica de la reacci ó n cuando el per ó xido de terbutilo  (radical ter-butoxi) se adiciona al cloruro de vinilo para iniciar la polimerizaci ó n.  Muestre el paso inicial, paso de propagaci ó n y formas de terminaci ó n. Muestre el  movimiento de los electrones con flechas curvas. b) repita la parte a) para la  polimerizaci ó n del estireno usando butil.litio como iniciador c) escriba los primeros pasos (hasta un tetr á mero) para la polimerizaci ó n catalizada  por el BF3 es un catalizador muy efectivo que requiere un traza de agua o metanol
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9.  El poli(etilenotereftalico) o PET (por sus siglas en ingles) es un poli é ster utilizado  para fabricar botellas de refresco. Se prepara por medio de la reacci ó n de  etilenglicol con acido 1,4-bencenodicarboxilico (acido tereftalico): Dibuje la  estructura de PET 10. En cada una de las reacciones siguientes, 1) indique tipo de reacci ó n suceder á  E2,  o E1 y 2) indique el producto principal de cada reacci ó n de eliminaci ó n, sin tener en  cuenta los estereoisomeros:
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