Calculate the initial rate of polymerisation, Chemistry

Assignment Help:

(a) Given the values below, calculate the concentration of benzoyl peroxide required to prepare polystyrene with a number average molar mass of 400,000 by bulk free radical polymerisation at 60°C, assuming all termination is by combination.

f = 0.6

kd=2×10-6 s-1

kp= 341 M-1 s-1

kt=4×107 M-1s-1

Density of styrene = 880 kg m-3.

(b) Calculate the initial radical concentration and initial rate of polymerisation for this reaction.

(c) Given the values below for the activation energies of benzoyl peroxide dissociation, styrene propagation, and styrene termination, and assuming all other parameters remain constant calculate the number average molar mass, initial radical concentration and initial rate of polymerisation if the reaction is run at 66°C rather than 60°C.

EA dissociation = 115 kJ mol-1

EA propagation = 34 kJ mol -1

EA termination = 10 kJ mol-1


Related Discussions:- Calculate the initial rate of polymerisation

Electrolysis, In electrochemical series moving down the table the ease of ...

In electrochemical series moving down the table the ease of discharge at cathode increases.why? And what is ease of discharge

Vulcanization, write short note on vulcanization?

write short note on vulcanization?

Fats and oils, what are the composition of fats and oils?

what are the composition of fats and oils?

ANALYTICAL LAB, I NEED A DOCUMENT LOOKED AT FOR TOMORROW ITS CHROMATOGRA LA...

I NEED A DOCUMENT LOOKED AT FOR TOMORROW ITS CHROMATOGRA LAB AND ITS ASSESSED

Determine atomic number and electrons of an element, The atomic number of a...

The atomic number of an element is 35. What is the total number of electrons present in all the p-orbitals of the ground state atom of that element: (1) 6        (2) 11

Lab prepation, How is ethane gas is preparec in the lab?

How is ethane gas is preparec in the lab?

Acetylene tetrachloride (westron), Acetylene tetrachloride (Westron), CHCl ...

Acetylene tetrachloride (Westron), CHCl 2 ·CHCl 2 It is as well called as sym. tetrachloroethane. It is made by the action of chlorine on acetylene in existence of a catalyst

Explain about the dielectric breakdown, Explain about the Dielectric  Brea...

Explain about the Dielectric  Breakdown Dielectric  Breakdown  of  a  dielectric  material  is  because of the excitation of electrons into the conduction band across energy

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd