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//Calculate the Dipole-Dipole interaction energy in kJ mol^-1
//Example 16.1
clc;
clear;
mewA=1.08*3.3356*10^-30; //Dipole moment in C m for one molecule
mewB=1.08*3.3356*10^-30; //Dipole moment in C m for other molecule
epsilone=8.854*10^-12; //Molar absorptivity or molar extinction coefficient in C^2 N^-1 m^-2
r=4*10^-10; //Distance between two molecule of HCl in m
V1=-(2*mewA*mewB)/(4*%pi*epsilone*(r)^3); //Diploe-Diplole interaction in N m
V=(V1*6.022*10^23)/1000; //Dipole-Dipole interaction in kJ mol^-1
printf("Dipole-Dipole interaction = %.1f kJ mol^-1 ",V);
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