Palit and Das (Proc. Roy. Soc. London, 226A 82 (1954)) measured ῡtr at 60 ºC for different values of the ratio [SX]/[M] and evaluated CSX and ῡ for vinyl acetate undergoing chain transfer with various solvents. Some of their measured and derived results are tabulated below (the same concentrations of AIBN and monomer were used in each run). Assuming that no other transfer reactions occur, calculate the values missing from the table. Criticize or defend the following proposition: The ῡ values obtained from the limit [SX]/[M] → 0 show that the AIBN initiates polymerization identically in all solvents.
Palit and Das (Proc. Roy. Soc. London, 226A 82 (1954)) measured ῡtr at 60 ºC for different values of the ratio [SX]/[M] and evaluated CSX and ῡ for vinyl acetate undergoing chain transfer with various solvents. Some of their measured and derived results are tabulated below (the same concentrations of AIBN and monomer were used in each run). Assuming that no other transfer reactions occur, calculate the values missing from the table. Criticize or defend the following proposition: The ῡ values obtained from the limit [SX]/[M] → 0 show that the AIBN initiates polymerization identically in all solvents.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Palit and Das (Proc. Roy. Soc. London, 226A 82 (1954)) measured ῡtr at 60 ºC for different values of the ratio [SX]/[M] and evaluated CSX and ῡ for vinyl acetate undergoing chain transfer with various solvents. Some of their measured and derived results are tabulated below (the same concentrations of AIBN and monomer were used in each run). Assuming
that no other transfer reactions occur, calculate the values missing from the table. Criticize or defend the following proposition: The ῡ values obtained from the limit [SX]/[M] → 0 show that the AIBN initiates polymerization identically in all solvents.
![Solvent
Ūtr
[SX]/[M]
Csx × 104
t-Butyl alcohol
6580
3709
0.46
Methyl isobutyl ketone
6670
510
0.492
Diethyl ketone
6670
0.583
114.4
Chloroform
93
0.772
125.2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff373320e-2873-4848-b33a-522a489f74bc%2F0236fc25-0493-4552-86a5-f1576e0f33eb%2Fy60o9x_processed.png&w=3840&q=75)
Transcribed Image Text:Solvent
Ūtr
[SX]/[M]
Csx × 104
t-Butyl alcohol
6580
3709
0.46
Methyl isobutyl ketone
6670
510
0.492
Diethyl ketone
6670
0.583
114.4
Chloroform
93
0.772
125.2
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