Electrical Potential Due to Molecular Polarization

Many biological molecules exhibit electrical polarization moments due to asymmetrical distribution of nuclei and their associated electronic charges within the molecule. Also, an externally applied electrical field or a local 

The electrical potential energy and its force due to these electrical polarizations are of rather a short-range nature compared with those arising from the coulombic force with respect to distance. However, certain assemblies of these polarized molecules could result in the properties of rather long-range electrical potential and force. 

we shall review the electrical potential and its force due to individual polarized or polarizable molecules. Those for the molecular assembly will be discusssed later (Section 2). 

Since polar molecules associate preferentially with water, another polar molecule, the degree of solubility of a molecule in the aqueous phase depends on the degree of polarity of ihe molecule. This is also true for the case of nonpolar molecules in nonpolar solvents. 

Solubilities of Some Dipolar Ions and Uncharged Isomers in Water and Ethanol at 25  

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