The monomer that can be used as a starting material to prepare a copolymer of styrene and acrylonitrile is to be determined. Concept introduction: The copolymers are obtained by the polymerization of two different monomers. The anionic polymerization occurs through the formation of carbanion. The monomers having electron withdrawing group at vinylic position are susceptible to anionic polymerization. The initiation of anionic polymerization involves the addition of base to the monomer and formation of a carbanion. The electron withdrawing effect of the cyanide group is higher in magnitude than that of the benzene ring. Hence, it stabilizes the carbanion better.

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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 28, Problem 25P

Interpretation Introduction

Interpretation:

The monomer that can be used as a starting material to prepare a copolymer of styrene and acrylonitrile is to be determined.

Concept introduction:

The copolymers are obtained by the polymerization of two different monomers.

The anionic polymerization occurs through the formation of carbanion.

The monomers having electron withdrawing group at vinylic position are susceptible to anionic polymerization.

The initiation of anionic polymerization involves the addition of base to the monomer and formation of a carbanion.

The electron withdrawing effect of the cyanide group is higher in magnitude than that of the benzene ring. Hence, it stabilizes the carbanion better.

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Using a cell of known pathlength b = 1.25115 x 10-3 cm, a water absorption spectrum was measured. The band at 1645 cm-1, assigned to the O-H bending, showed an absorbance, A, of 1.40. a) Assuming that water density is 1.00 g/mL, calculate the water molar concentration c (hint: M= mole/L) b) Calculate the molar absorptivity, a, of the 1645 cm-1 band c) The transmitted light, I, can be written as I= Ioexp(-xb), where x is the absorption coefficient (sometimes designated as alpha), Io is the input light, and b is the cell pathlength. Prove that x= (ln10)*x*c d) Calculate x for the 1645 cm-1 band

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 28, Problem 25P

Interpretation Introduction

Interpretation:

The monomer that can be used as a starting material to prepare a copolymer of styrene and acrylonitrile is to be determined.

Concept introduction:

The copolymers are obtained by the polymerization of two different monomers.

The anionic polymerization occurs through the formation of carbanion.

The monomers having electron withdrawing group at vinylic position are susceptible to anionic polymerization.

The initiation of anionic polymerization involves the addition of base to the monomer and formation of a carbanion.

The electron withdrawing effect of the cyanide group is higher in magnitude than that of the benzene ring. Hence, it stabilizes the carbanion better.

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 28, Problem 25P

Interpretation Introduction

Interpretation:

The monomer that can be used as a starting material to prepare a copolymer of styrene and acrylonitrile is to be determined.

Concept introduction:

The copolymers are obtained by the polymerization of two different monomers.

The anionic polymerization occurs through the formation of carbanion.

The monomers having electron withdrawing group at vinylic position are susceptible to anionic polymerization.

The initiation of anionic polymerization involves the addition of base to the monomer and formation of a carbanion.

The electron withdrawing effect of the cyanide group is higher in magnitude than that of the benzene ring. Hence, it stabilizes the carbanion better.

Expert Solution & Answer

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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 28, Problem 25P

Interpretation Introduction