Topics: Concept of activity and activity coefficient, Ionic atmosphere, Relaxation time, Ionic strength, Debye-Huckel limiting law for strong electrolytes, Measurement of activity coefficient, Effect of temperature& dielectric constant on activity coefficient, Dissociation constants and their measurement for polybasic acids & bases, conductometric, potentiometric and pH-metric methods
Ionic Atmosphere is a concept employed in Debye-Hückel theory which explains the electrolytic conductivity behaviour of solutions. It can be generally defined as the area at which a charged entity is capable of attracting an entity of the opposite charge.
Asymmetry effect is the asymmetrical or irregular distribution of the ion cloud around an ion which occurs from the finite relaxation time when a voltage is applied.
Electrophoretic effect is the tendency of the applied potential to move the ionic atmosphere which reduces the ionic motion in a solution. 
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