The energy barrier for rotation around the C-C bond in ethane is small (1-20 kJ mol-1). This barrier

Q: What is the correct answer for NCERT11?

The correct answer is B. The small energy barrier to rotation around the C-C single bond in ethane is due to torsional strain, which arises from the weak repulsive interactions between the electron clouds of the adjacent bonds in different conformations. This strain is maximum in the eclipsed conformation and minimum in the staggered conformation.

Q: The energy barrier for rotation around the C-C bond in ethane is small (1-20 kJ mol-1). This barrier is attributed to:

The correct answer is B. The small energy barrier to rotation around the C-C single bond in ethane is due to torsional strain, which arises from the weak repulsive interactions between the electron clouds of the adjacent bonds in different conformations. This strain is maximum in the eclipsed conformation and minimum in the staggered conformation.

Q: What are the options for this NCERT11 question?

A. Bonding interactions · B. Torsional strain (repulsive interaction between adjacent bonds) · C. Steric hindrance from large groups · D. Ionic character of the C-C bond

Question

The energy barrier for rotation around the C-C bond in ethane is small (1-20 kJ mol-1). This barrier is attributed to:

FirstInTest · Accepted Answer

The small energy barrier to rotation around the C-C single bond in ethane is due to torsional strain, which arises from the weak repulsive interactions between the electron clouds of the adjacent bonds in different conformations. This strain is maximum in the eclipsed conformation and minimum in the staggered conformation.

Answer

Bonding interactions

Answer

Torsional strain (repulsive interaction between adjacent bonds)

Answer

Steric hindrance from large groups

Answer

Ionic character of the C-C bond

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