Strong electrolytes
o
When the concentration approaches to zero , the molar conductivity is referred to as limiting molar conductivity . It is represented by the symbol Ë o m .
Strong electrolytes
o
A solute or substances that completely ionize or dissociates in a solution are known as strong electrolyte . These ions are good conductors of electricity in the solution .
o For example , HCl , HBr , HI , HNO3 , NaOH , KOH , etc . o
For strong electrolytes , Λm increases slowly with dilution and can berepresented by the equation :
o It dissociates completely at moderate concentrations .
o The conductance of the solution increases with dilution of solution . o
There exist strong interionic forces of attraction at moderate concentrations .
o The slope for Λm vs c 1 / 2 is linear at low concentrations .
Fig . Molar conductivity Λm Vs . c 1 / 2 for acetic acid and potassium chloride