The energy difference (in kcalmol−1) between the staggered and eclipsed conformations of ethane is:
A
2.9
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B
2
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C
3.6
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D
1.5
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Solution
The correct option is A 2.9 The eclipsed conformation is the least stable with the maximum energy whereas the staggered conformation is relatively more stable with less energy. The difference in energy between both the conformations is 2.9kcal