Question

Molar conductivity of a strong electrolyte like kcl

Answer 1

Answer:

Variations Of Molar Conductivity With Concentration

Specific conductivity or conductivity of an electrolytic solution at any given concentration is the conductance of unit volume of solution kept between two platinum electrodes with unit area of cross section and at a distance of unit length. Conductivity decreases with decrease in concentration as the number of ions per unit volume that carry the current in a solution decrease on dilution. Molar conductivity of a solution at a given concentration is the conductance of the volume V of solution containing one mole of electrolyte kept between two electrodes with area of cross section A and distance of unit length.

Ʌm = Кc

Here,

c = concentration in moles per volume

К = specific conductivity

Ʌm = molar conductivity.

As the solution contains only one mole of electrolyte, the above equation can be modified as:

Ʌm = КV

Molar conductivity increases with decrease in concentration as the total volume, V, of solution containing one mole of electrolyte also increases. Upon dilution the concentration decreases. When the concentration approaches zero, molar conductivity of the solution is known as limiting molar conductivity, Ë°m. Variation of molar conductivity with concentration is different for strong and weak electrolytes.

Answer 2

Answer:

The molar conductivity of a strong electrolyte solution (KCl) with respect to molar concentration is presented as the solid line. Kohlrausch’s law theoretically defines the relationship between molar conductivity ( ) and molar concentration as a power law regression for all ...