How to determine the variation of molar conductivity of weak electrolyte with respect to specific conductance and volume of one mole of dissociated ion?
 

Asked by Kishujaiswal353 | 27th Sep, 2014, 02:54: PM

Expert Answer:

Conductivity of an electrolytic solution depends upon the number of ions.

The number of ions per unit volume decreases with an increase in dilution hence specific conductivity decreases.

But molar conductivity increases with dilution since it is the product of specific conductivity and volume. 

             Λm = k × V 

 

Since increase in volume is much more than decrease in specific conductivity.

Moreover on dilution interionic interactions decrease which further increases molar conductivity.

Answered by Vaibhav Chavan | 30th Sep, 2014, 12:48: PM