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Question
Which points on the potential energy diagram represent the eclipsed conformation of ethane and staggered conformation of propane respectively ?
Which points on the potential energy diagram represent the eclipsed conformation of ethane and staggered conformation of propane respectively ?
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Solution
The correct option is C S,P
The eclipsed conformation of ethane is represented by point S. This
conformation has maximum potential energy but it is lower than the eclipsed conformation of propane.
The staggered conformation of propane is represented by point P. It has
lowest potential energy but it is higher than the potential energy of
stagerred conformation of ethane. This is explained below.
Propane
has more conformational energy as compared to ethane. Eclipsed
conformation of ethane has more Vander waal strain and torsional strain
so it lies upper side in the P.E. diagram and staggered conformation of
propane has less Vander waal strain and torsional strain so it lies
lower side in P.E. diagram.
The eclipsed conformation of ethane is represented by point S. This
conformation has maximum potential energy but it is lower than the eclipsed conformation of propane.
The staggered conformation of propane is represented by point P. It has
lowest potential energy but it is higher than the potential energy of
stagerred conformation of ethane. This is explained below.
Propane has more conformational energy as compared to ethane. Eclipsed conformation of ethane has more Vander waal strain and torsional strain so it lies upper side in the P.E. diagram and staggered conformation of propane has less Vander waal strain and torsional strain so it lies lower side in P.E. diagram.
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