Organic Chemistry 9th Edition

Published by Brooks Cole
ISBN 10: 1305080483
ISBN 13: 978-1-30508-048-5

Chapter 4 - Organic Compounds: Cycloalkanes and Their Stereochemistry - Problem: 10

Answer

See explanation below as the answer can be found by examining the models given.

Work Step by Step

Notice that they're 10 H-H interactions in planar cyclopentane rings. Therefore, the expected cost is equal to 40 KJ/mol.
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