A three fold increase in the distance between two dipoles of adjacent molecules:

Question

Quizplus · Accepted Answer

The strength of interactions between two dipoles is inversely proportional to the cube of the distance between them. Therefore, a three-fold increase in distance will result in a decrease in the strength of interactions by (1/3)^3 = 1/27 or 0.037. This is equivalent to a decrease in strength by 1/0.037, or approximately 27, which is the cube of 3. Therefore, the strength of interactions decreases by 729 fold. The correct choice is D.

A Three Fold Increase in the Distance Between Two Dipoles