Elements of
Chemical Reaction Engineering
6th Edition



Home

Essentials of
Chemical Reaction Engineering
Second Edition

  Select  Chapter  >>     TOC     Preface     1     2     3     4     5     6     7     8     9     10     11     12     13     14     15     16     17     18     Appendices  
›

By Chapter Hide

  • Objectives
  • Living Example Problems
  • Extra Help
  • - Summary Notes
  • - LearnChemE Screencasts
  • - FAQs
  • - Interactive Computer Modules
  • Additional Material
  • Self Test
  • i>Clicker Questions
  • Professional Reference Shelf

By Concept Hide

  • Interactive Modules
  • -Web Modules
  • -Interactive Computer Games
  • Living Example Problems

U of M Hide

  • Asynchronous Learning
  • ChE 344
  • ChE 528

Chapter 9: Reaction Mechanisms, Pathways, Bioreactions and Bioreactors

Example 9.3: Calculate Xnfor Monomers with Different End Groups

 

10 molecules of ARB initially

MWR = 100 , Meg ~ 18, we neglect MWeg wrt MWR.

At time t we have 5 polymer molecules with the following distribution

MW*

Species

By product

Conversion of monomer

where:

NM = Concentration of monomer ARB (2ARB).
NM0 = Initial concentration of monomer (10 ARB).

100

ARB

100

ARB

200

AR2B

+ AB

300

AR3B

+ 2AB

300

AR3B

+ 2AB

*Neglecting Meg

 

p = fraction of functional groups of A that have reacted.

There are 5 molecules of polymer that remain: 2 of ARB, 1 of AR2B, and 2 of AR3B.

 

We are giving to calculate by three different methods, all of which yield the same result.

 

Back to beginning of example

Back to Chapter 9