CH1012
                                         L1 /   
‹#›
                                         L1 /   
12
ADDING ELECTROLYTE
Stable Colloid
Unstable Colloid
DG
DG
distance
distance
A positive free energy DG
provides colloid stability.
DGrep(electrostatic)
DGattr(van der Waals)
DGtot (DGrep+ DGattr )
Adding electrolyte reduces
the repulsive energy
between the particles.
The positive free energy is
removed from the curve &
the colloid is unstable.