Editing Van 't Hoff factor (section)

==Dissociated solutes==
The degree of dissociation is the fraction of the original solute molecules that have [[dissociation (chemistry)|dissociated]]. It is usually indicated by the Greek symbol <math>\alpha</math>. There is a simple relationship between this parameter and the van&nbsp;'t Hoff factor. If a fraction <math>\alpha</math> of the solute dissociates into <math>n</math> ions, then

:<math> i = 1 + \alpha (n - 1). </math>

For example, the dissociation KCl {{Eqm}} K<sup>+</sup> + Cl<sup>−</sup> yields <math>n = 2</math> ions, so that <math>i = 1 + \alpha</math>.

For dissociation in the absence of association, the van&nbsp;'t Hoff factor is:
<math>i > 1 </math>.