This page discusses lithium carbonate's role in lithium batteries, produced through a reaction with carbon dioxide. It explains the common ion effect , where adding a common ion decreases a compound's … Science > Chemistry > Physical Chemistry > Ionic Equilibria > Common Ion Effect In this article, we shall study the common ion effect and its applications. The phenomenon in which the degree of dissociation of any weak electrolyte is suppressed by adding a small amount of strong electrolyte containing a common ion is called a common ion effect . When one or more species in a reaction are shared with another reaction, this phenomenon is referred to as the common ion effect , and it is used to characterize the influence on an equilibrium. This leads to a change in the characteristics of the equilibrium as a consequence. The common ion effect refers to changes in solubility due to addition of an ion already present in the solution , while the salt effect involves ionic strength changes from salts providing no common ion.
