EP ORGANIC CHEMISTRY -MOD.MASTERING 18W
EP ORGANIC CHEMISTRY -MOD.MASTERING 18W
9th Edition
ISBN: 9780136781776
Author: Wade
Publisher: PEARSON CO
Question
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Chapter 26.7A, Problem 26.13P

(a)

Interpretation Introduction

Interpretation:

The structure of Nomex is to be drawn.

Concept introduction:

The polymerization process in which molecules join together with loss of water or methanol is known as condensation polymerization.

The synthetic fibre, Nomex is a polyamide and flame-resistant material that is used to make fire-fighting equipments and clothing. It has very good thermal, chemical and radiation resistance.

(b)

Interpretation Introduction

Interpretation:

The structure of Kevlar is to be drawn.

Concept introduction:

The polymerization process in which molecules join together with loss of water or methanol is known as condensation polymerization.

The synthetic fabric, Kevlar is a heat-resistant material that is used in the bicycle tyres and racing sails and bulletproof vests. It has high tensile strength.

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1. For the four structures provided, Please answer the following questions in the table below. a. Please draw π molecular orbital diagram (use the polygon-and-circle method if appropriate) and fill electrons in each molecular orbital b. Please indicate the number of π electrons c. Please indicate if each molecule provided is anti-aromatic, aromatic, or non- aromatic TT MO diagram Number of π e- Aromaticity Evaluation (X choose one) Non-aromatic Aromatic Anti-aromatic || ||| + IV
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