Question

How can we experimentally measure electric dipole moment?

Answer 1

Answer:

You can place a dilute solution between the plates of a condensator and measure the impedance at low or moderate frequencies. This gives you the relative dielectric constant and the total polarization. You can then obtain the electronic polarization from the refraction index. The difference is the orientational polarization. You can use Langevin's theory to get the dipole moment.

Except for some rather special cases, you cannot use this technique for solid samples.

Answer 2

Explanation:

The SI unit for electric dipole moment is the coulomb–meter. This is too large to be practical on the molecular scale. Bond dipole moments are commonly measured in debyes, represented by the symbol D, which is obtained by measuring the charge in units of 10−10 statcoulomb and the distance d in Angstroms.