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

Structure of atoms, briefly explain laws of atoms with example

briefly explain laws of atoms with example

Uses of alkyl nitrites, Uses of Alkyl nitrites (1) Ethyl nitrite dialat...

Uses of Alkyl nitrites (1) Ethyl nitrite dialates the blood vessels and so accelerates pulse rate and lowers blood pressure thus it is utilized for a medicine for the treatment

STOCHIOMETARY, Ask quCOPPER REACT REACT WITH OXYGEN TO FORM TWO OXIDES X AN...

Ask quCOPPER REACT REACT WITH OXYGEN TO FORM TWO OXIDES X AND Y ON ANALYSIS 1.535g OF X YIELDED 1.365 OF COPPER AND 1.450 OF Y YIELDED 1.160g OF COPPER 1 DETERMIN THE CHEMICAL FOR

Electrolysis of water in the presence of an indicator, Electrolysis of Wate...

Electrolysis of Water in the Presence of an Indicator • Place ~ 50 mL of the thawed cabbage juice in the same glass container (after rinsing) used in Step 1. • Insert the ele

Application of Electrogravimetry, How to determine the mass of substance el...

How to determine the mass of substance electrogravimetricaly?

Scary Density Situation, The density of pure silver is 10.5 g/cm^3 at 20C....

The density of pure silver is 10.5 g/cm^3 at 20C. If 5.25g of pure silver pellets is added to a graduated cylinder containing 11.2 mL of water, to what volume level will the water

Explain dielectric loss, Dielectric loss: These losses occur because of el...

Dielectric loss: These losses occur because of electrons hopping from single lattice site to another in transition metal oxides.

Why are acceptance tests used, Q. Why are acceptance tests used? Accept...

Q. Why are acceptance tests used? Acceptance tests are used to evaluate product acceptability or liking or to determine which product is the most acceptable or the most prefer

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