Question

Amount of the work done in pulling the molecules apart measures the

Answer 1

Explanation:

The work done to pull them (the molecules) apart if they are at R

0,is:

=Potential energy of the system, when they are apart by a distance R0is,

U(R0)=U0

[( R0/R0)]^12 −2(R0/R0) ^6]=−Uo

=Now force at the point is,

F=− dU(R0)/dr

So the work done to to pull them apart is :

W=∫F.dr=∫ dU(R 0 ) /dr.dr=∫dU(R 0 )=Uo