Q.
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is
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a
the eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has torsional strain
b
the staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no torsional strain
c
the staggered conformation of ethane is less stable than eclipsed conformation, because staggered conformation has torsional strain
d
the eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.
answer is B.
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Detailed Solution
Magnitude of torsional strain depends upon the angle of rotation about C-C. Staggered form has the least torsional strain and the eclipsed form has the maximum torsional strain so, the staggered conformation of ethane is more stable than the eclipsed conformation.
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