Calculation for CCC (n_c)

In this section we will calculate the Critical Coagulation Concentration (CCC) which is concentration of the solute in the electrolyte at which coagulation is favorable. Spontaneous coagulation means that no activation energy is required for coagulation.

Graphical representation for CCC is shown in Graph-4 in Figure 10.4. From graph we can see that following conditions must be satisfied at point P (for CCC):

	i.e. barrier height is 0, and,	(10.2)
	i.e. the maxima lies at the point	(10.3)

If we solve the above equations then we would get the required critical concentration. Applying these in equation (10.1) we get

	(10.4)
and
	(10.5)

where D_m is the distance at which equations (10.2) and (10.3) satisfy and