
Concept explainers
a. Draw a potential energy diagram for rotation about the C—C bond of 1,2·dichloroethane through 360°, starting with the least stable conformer. The anti conformer is 1.2 kcal/mol more stable than a gauche conformer . A gauche conformer has two energy barriers. 5.2 kcal/mol and 9.3 kcal/mol.
b. Draw the conformer that is present in greatest concentration.
c. How much more stable is the most stable staggered confomer than the most stable eclipsed conformer?
d. How much more stable is the most stable staggered conformer than the least stable eclipsed conformer?

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Chapter 3 Solutions
Organic Chemistry; Modified MasteringChemistry with Pearson eText -- ValuePack Access Card; Study Guide and Student Solutions Manual for Organic Chemistry, Books a la Carte Edition (7th Edition)
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