Consider a free radical polymerization initiated by 10-3 M AIBN. At 70°C, kd is 4.0x10-5 s-1 and f is close to 0.6. If an inhibitor is to be used to suppress poly- merization for an hour, what should be its concentration, if every inhibitor molecule accounts for one primary or monomer-ended radical ? [Ans. 1.73×10-4 M]

Consider a free radical polymerization initiated by 10-3 M AIBN. At 70°C, kd is 4.0x10-5 s-1 and f is close to 0.6. If an inhibitor is to be used to suppress poly- merization for an hour, what should be its concentration, if every inhibitor molecule accounts for one primary or monomer-ended radical ? [Ans. 1.73×10-4 M]

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Polymerization Kinetics

Polymerization is a chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that diverge in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes. Polymerization is generally classified into step-growth and chain polymerization. Polymers are categorized into linear polymer and cross-linked polymers that are produced either by condensation or additional polymerization.

Question

6.18 Consider a free radical polymerization initiated by 10-3 M ABN. At 70°C, kd is
4.0x10-5 s-1 and f is close to 0.6. If an inhibitor is to be used to suppress poly-
merization for an hour, what should be its concentration, if every inhibitor molecule
accounts for one primary or monomer-ended radical ?
[Ans. 1.73x10-4 M]

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