Question

Locate the planes of symmetry in the eclipsed conformation of ethane in this conformation ethane, its chiral or achiral

Answer 1

The molecule is achiral if it is superimposable on its mirror image. Most achiral molecules do have a plane of symmetry or a center of symmetry.

There are four planes of symmetry in eclipsed conformation of ethane:

Ethane in this conformation is achiral.