Question

Explain with the help of a diagram how the molar conductivities of I) a strong electolyte and ii)a weak electrolyte vary with dilution of solutions.Give a reason for this variations.

Answer 1

The more ions in the solution the greater is the conductance. strong electrolytes dissociate almost completely into ions in solutions and their solutions have high conductance. weak electrolytes dissociate to only small extent and give lesser number of ions. the solutions of weak electrolytes have low conductance

"Concentration of the solution : The molar conductance of electrolytic solution varies with the concentration of the electrolyte. In general, the molar conductance of an electrolyte increases with decrease in concentration or increase in dilution."

"The molar conductance of strong electrolyte (HCl, KCl, KNO3) as well as weak electrolytes (CH3COOH.NH4OH) increase with decrease in concentration"