Calculate the initial radical, 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 radical

An electronic transition from 1s orbital of an atom causes, An electronic t...

An electronic transition from 1s orbital of an atom causes: (1) Absorption of energy (2) Release of energy (3) Both release or absorption of energy (4) Unpredictable

Calculate de-broglie wavelength of an electron travelling, Calculate de-Bro...

Calculate de-Broglie wavelength of an electron travelling at 1% of the speed of light: (1) 2.73 x 10- 24                (2)  2.42 x 10 -10 (3)  242.2x 10- 10

What is tracers?, In the study of mechanisms of various chemical reactions,...

In the study of mechanisms of various chemical reactions, Deuterium and Tritium are used as tracers.

Student, formula of chromium (III) and acetate

formula of chromium (III) and acetate

Chemicals, why does sulfuric acid get hotter when you neutralise it

why does sulfuric acid get hotter when you neutralise it

Find the ph value, 50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a ...

50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(

Explain the process for rate equation expression., The mathematical express...

The mathematical expression used for expressing the rates of chemical reaction is given below by taking two different set of chemical reactions.      Reactions involving same s

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