The rigidity of copolymer by divinylbenzene is to be stated. Concept introduction: Copolymers are defined as polymers whose repeating structural units are derived from two or more types of monomers unit. Polystyrene is a polymer made from the monomer styrene. This polymer can be made more rigid by copolymerizing styrene with divinylbenzene . Copolymerization reactions are those polymerization reaction in which two or more types of monomer units react together to form the final polymer. To determine: The more rigidity of copolymer by divinylbenzene .

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5. A solution of sucrose is fermented in a vessel until the evolution of CO2 ceases. Then, the product solution is analyzed and found to contain, 45% ethanol; 5% acetic acid; and 15% glycerin by weight. If the original charge is 500 kg, evaluate; e. The ratio of sucrose to water in the original charge (wt/wt). f. Moles of CO2 evolved. g. Maximum possible amount of ethanol that could be formed. h. Conversion efficiency. i. Per cent excess of excess reactant. Reactions: Inversion reaction: C12H22O11 + H2O →2C6H12O6 Fermentation reaction: C6H12O6 →→2C2H5OH + 2CO2 Formation of acetic acid and glycerin: C6H12O6 + C2H5OH + H₂O→ CH3COOH + 2C3H8O3

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Chapter 21, Problem 79E

Interpretation Introduction

Interpretation: The rigidity of copolymer by divinylbenzene is to be stated.

Concept introduction: Copolymers are defined as polymers whose repeating structural units are derived from two or more types of monomers unit. Polystyrene is a polymer made from the monomer styrene. This polymer can be made more rigid by copolymerizing styrene with divinylbenzene . Copolymerization reactions are those polymerization reaction in which two or more types of monomer units react together to form the final polymer.

To determine: The more rigidity of copolymer by divinylbenzene .

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5. A solution of sucrose is fermented in a vessel until the evolution of CO2 ceases. Then, the product solution is analyzed and found to contain, 45% ethanol; 5% acetic acid; and 15% glycerin by weight. If the original charge is 500 kg, evaluate; e. The ratio of sucrose to water in the original charge (wt/wt). f. Moles of CO2 evolved. g. Maximum possible amount of ethanol that could be formed. h. Conversion efficiency. i. Per cent excess of excess reactant. Reactions: Inversion reaction: C12H22O11 + H2O →2C6H12O6 Fermentation reaction: C6H12O6 →→2C2H5OH + 2CO2 Formation of acetic acid and glycerin: C6H12O6 + C2H5OH + H₂O→ CH3COOH + 2C3H8O3

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