The mechanism for the free radical polymerization of isobutylene is to be predicted. Concept introduction: The general steps followed by free-radical addition reaction are stated below: First step is initiation that involves formation of radical. Second step is propagation that involves generation of another radical. To determine: The mechanism for the free radical polymerization of isobutylene.

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Definition Definition 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 vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 8, Problem 8.74SP

Interpretation Introduction

Interpretation: The mechanism for the free radical polymerization of isobutylene is to be predicted.

Concept introduction: The general steps followed by free-radical addition reaction are stated below:

First step is initiation that involves formation of radical.

Second step is propagation that involves generation of another radical.

To determine: The mechanism for the free radical polymerization of isobutylene.

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The cationic polymerization of isobutylene (2-methylpropene) is shown in Section 8-16A. Isobutylene is often polymer- ized under free-radical conditions. Propose a mechanism for the free-radical polymerization of isobutylene.

The cationic polymerization of isobutylene (2-methylpropene) is shown in Section 8-16A. Isobutylene is often polymerized under free-radical conditions. Propose a mechanism for the free-radical polymerization of isobutylene.8

HC CH CH3CO2H H,SO, H3C-C-O-C=CH2 H HgSO, Acetylene Acetic Acid Vinyl acetate Acetylene reacts with acetic acid in the presence of H,SO4 and HgSO4 to yield vinyl acetate, a monomer used in the production of poly(vinyl acetate). The reaction mechanism includes the following steps: 1. Formation of a bridged mercurinium ion intermediate between Hg- and acetylene; 2. Addition of acetic acid to open the three-membered ring; 3. Proton transfer to solvent to give an organomercury vinyl ester3; 4. Addition of H to the alkene to form a carbocation; 2+ 5. Expulsion of Hg²+ to form the alkene. Diagram the mechanism on a separate sheet of paper, and then draw the structure of the product(s) of step 3. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • Draw organic species only. • Do not include counter-ions, e.g., Na, I, in your answer.

Answer 2

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Definition Definition 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 vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 8, Problem 8.74SP

Interpretation Introduction

Interpretation: The mechanism for the free radical polymerization of isobutylene is to be predicted.

Concept introduction: The general steps followed by free-radical addition reaction are stated below:

First step is initiation that involves formation of radical.

Second step is propagation that involves generation of another radical.

To determine: The mechanism for the free radical polymerization of isobutylene.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Definition Definition 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 vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 8, Problem 8.74SP

Interpretation Introduction

Interpretation: The mechanism for the free radical polymerization of isobutylene is to be predicted.

Concept introduction: The general steps followed by free-radical addition reaction are stated below:

First step is initiation that involves formation of radical.

Second step is propagation that involves generation of another radical.

To determine: The mechanism for the free radical polymerization of isobutylene.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition 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 vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 8, Problem 8.74SP

Interpretation Introduction