Given that in preparing the prepolymer used to make epoxy resins, a bisphenol reacts with epichlorohydrin in the presence of a base. The product formed when two moles of phenol react with epichlorohydrin is to be given. And the mechanism of its formation also is to be given. Concept introduction: In Williomson synthesis, phenoxide ions react with alkyl or aryl halides to yield ethers. The phenoxide ion can be produced by treating the phenol with a base. Epoxides can be opened by treating with nucleophilc reagents. When both epoxide carbons are either primary or secondary the nucleophilic attack mainly occurs at the less highly substituted side. When one of the epoxide carbons is tertiary, the nucleophilic attack mainly occurs at the more highly substituted side. To give: The product formed and the mechanism of its formation when two moles of phenol react with epichlorohydrin.

Question

Using reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NOCI (g) 2NO (g) + Cl2 (g) AGº =41. kJ Now suppose a reaction vessel is filled with 4.50 atm of nitrosyl chloride (NOCI) and 6.38 atm of chlorine (C12) at 212. °C. Answer the following questions about this system: ? rise Under these conditions, will the pressure of NOCI tend to rise or fall? x10 fall Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of NOCI will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if you said the pressure of NOCI will tend to fall, can that be changed to a tendency to rise by adding NO? yes no If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits. 0.035 atm ✓ G 00. 18 Ar

Answer 1

Question

Chapter 18.SE, Problem 29MP

Interpretation Introduction

Interpretation:

Given that in preparing the prepolymer used to make epoxy resins, a bisphenol reacts with epichlorohydrin in the presence of a base. The product formed when two moles of phenol react with epichlorohydrin is to be given. And the mechanism of its formation also is to be given.

Concept introduction:

In Williomson synthesis, phenoxide ions react with alkyl or aryl halides to yield ethers. The phenoxide ion can be produced by treating the phenol with a base.

Epoxides can be opened by treating with nucleophilc reagents. When both epoxide carbons are either primary or secondary the nucleophilic attack mainly occurs at the less highly substituted side. When one of the epoxide carbons is tertiary, the nucleophilic attack mainly occurs at the more highly substituted side.

To give:

The product formed and the mechanism of its formation when two moles of phenol react with epichlorohydrin.

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