The staggered conformation is the most stable of all possible conformations of ethane, since the angles between C-H bonds on the front and rear carbons are maximized which minimizes the energy.

Which conformation is most stable?

…with respect to the other—the eclipsed conformation is the least stable, and the staggered conformation is the most stable. The eclipsed conformation is said to suffer torsional strain because of repulsive forces between electron pairs in the C―H bonds of adjacent carbons.

Which conformation of alkane is most stable?

The most stable conformation of butane is the one in which the two terminal methyl groups are the farthest removed from each other, i.e. the anti conformation. Somewhat less favorable is the gauche conformation in which the methyl groups assume a dihedral angle of 60°.

Which is more stable eclipsed or staggered ethane?

The staggered conformation of ethane is a more stable, lower energy conformation than the eclipsed conformation because the eclipsed conformation involves unfavorable interactions between hydrogen atoms. Specifically, the negatively charged electrons in the bonds repel each other most when the bonds line up.

Which of the following conformation of ethane is least stable?

Staggered conformation of ethane is most stable while eclipsed conformation is least stable.

Conformational Analysis of Ethane and Butane - Newman Projections

Which conformation of ethane has the lowest potential energy?

The lowest energy conformation of ethane, shown in the figure above, is called the 'staggered' conformation, in which all of the C-H bonds on the front carbon are positioned at dihedral angles of 60°relative to the C-H bonds on the back carbon.

What is conformation of ethane?

In the eclipsed conformation, the C-H bonds on the front and back carbons are aligned with each other with dihedral angles of 0 degrees. ... In the staggered conformation, the C-H bonds on the rear carbon lie between those on the front carbon with dihedral angles of 60 degrees.

Why is the eclipsed conformation the least stable conformation of ethane?

Here we are given with the compound ethane. And staggered conformation of ethane is most stable while eclipsed conformation is least stable because staggered form has the least torsional strain and eclipsed form has the maximum torsional strain.

Which conformation is more stable and why?

The chair conformation is more stable because it does not have any steric hindrance or steric repulsion between the hydrogen bonds.

Which forms of ethane is more stable among staggered and eclipsed form and why?

The eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has no torsional strain.

Which conformation is more stable between ethane and n butane?

As in the case of ethane, the staggered conformers are more stable than the eclipsed conformers by 2.8 to 4.5 kcal/mol. Since the staggered conformers represent the chief components of a butane sample they have been given the identifying prefix designations anti for A and gauche for C.

Which conformation of ethane has maximum energy?

If we now rotate the front CH₃ group 60° clockwise, the molecule is in the highest energy 'eclipsed' conformation, where the hydrogens on the front carbon are as close as possible to the hydrogens on the back carbon.

Is axial or equatorial more stable?

A conformation in which both substituents are equatorial will always be more stable than a conformation with both groups axial.

Which of the following conformation of ethane-1/2-diol is most stable?

- Here, in ethane-1,2-diol, the Gauche form is more stable due to the intramolecular hydrogen bonding present in it. - This is shown in the diagram below: Hence, this intramolecular hydrogen bonding causes this conformation to be more stable. So, the correct answer is “Option B”.

Which of the following conformation of ethane is the most stable staggered eclipsed gauche skew?

Staggered conformation of ethane is most stable while eclipsed conformation is least stable.

Which conformation has highest stability Mcq?

• The most stable conformer has dihedral angle of 60° between all adjacent chlorine atoms.
• In the least stable conformer, two Cl-atoms are eclipsing one another while other two Cl-atoms are eclipsed to hydrogen atoms.
• In the most stable conformer, dihedral angle between hydrogen atoms is 60°

Which Newman projection of ethane is more stable?

Experiments show that there is a 12 kJ/mol (2.9 kcal/mol) barrier to rotation in ethane. The most stable (low energy) conformation is the one in which all six C–H bonds are as far away from each other as possible (staggered when viewed end-on in a Newman projection).

How do you determine the most stable conformation?

To find the most stable conformation, we choose the form with the least number of large axial groups; the least stable will have the most number of axial groups.

Which conformation will ethane molecules prefer to adopt?

What conformation will ethane molecules prefer to adopt? -They will prefer to adopt the staggered conformation because it is more stable (has lower potential energy).

Which of a )-( D is the most stable conformation?

So, the most stable conformation of cyclohexane is the chair conformation (Option D).

Which is more stable chair or boat conformation?

The chair conformation is the most stable conformation of cyclohexane. ... A second, much less stable conformer is the boat conformation. This too is almost free of angle strain, but in contrast has torsional strain associated with eclipsed bonds at the four of the C atoms that form the side of the boat.

Which conformation of ethane is more stable Why?

The staggered conformation is the most stable of all possible conformations of ethane, since the angles between C-H bonds on the front and rear carbons are maximized which minimizes the energy.

Which is least stable conformation of N?

The fully eclipsed conformation of n-butane is least stable due to the presence of. No strain is present in the molecule.

Which of the following conformation of ethylene glycol is most stable?

Hence, the most stable conformation of ethylene glycol is gauche conformation.