Question

The potential energy curve for interaction between two molecules is shown in figure. Which of the following statements are true?
A. (a) The molecules have maximum attraction for `r=OA`.

B. (b) The molecules have maximum kinetic energy for `r=OB`.
C. (c) The intermolecular force is zero for `r=OB`.
D. (d) For the gaseous state, the depth BD of the potential energy curve is much smaller that KT.

Answer 1

Correct Answer - B::C::D
a. False, it is repulsion here.
b. True, since minimum potential energy means maximum kinetic energy.
c. True, since slope gives force and it is zero here.
d. True, since a well `gt gt KT`, would mean molecules staying together.