Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 20 - Sections 20.1-20.14 - Exercises - Problems by Topic - Page 995: 70c

Answer

The answer is attached below.

Work Step by Step

In a benzene ring, the numbering starts from the carbon at the top. The hydrogens are substituted to form substituted benzenes. In Para-diethylbenzene, the prefix 'para' means 1,4 disubstituted. Therefore, two Ethyl groups are substituted with hydrogens of carbon number 1 and 4 respectively.
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