الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Random thermal motion of ions in solutions of strong electrolytes constantly brings
anions and cations into proximity. Electrostatic attraction then alters the ionic motions so as to
bring the ions closer together, occasionally to contact or near contact distances. Such pairs
remain together until sufficiently large thermal fluctuations again send the ions apart. The
tendency of the ions to associate in this way depends upon the balance between the interionic
coulomb forces and thermal energy – thus upon the ion valancies, the dielectric constant and the
temperature. It depends also on the solvation energy of the ions. Since the heat of solutions is
small, dissolution of soluble salt as free ions requires sufficient solvation energy almost
completely offset the lattice energy. Dissolution as ion-pairs requires solvation energy only
approximately equivalent to the sublimation energy. Thus poor solvation promotes ion
association.