Question

9. (a) Define molar conductivity of a solution and
explain how molar conductivity changes with
change in concentration of solution for a weak and
a strong electrolyte.​

Answer 1

Answer:

Die

Explanation:

Just jump off a cliff

Answer 2

Answer:

Molar conductivity of a solution at a given concentration is the conductance of volume V of a solution containing 1 mole the electrolyte kept between two electrodes with the area of cross-section A and distance of unit length.

Λ

m

=k

l

A

Now, l=1 and A=V (volume containing 1 mole of the electrolyte).

∴Λ

m

=kV

Molar conductivity increase with a decrease in concentration. This is because of the total volume V of the solution containing mole of the electrolyte increases on dilution.

Variation of molar conductivities with dilution:

For strong electrolytes, molar conductivity slowly increases with dilution.

For weak electrolytes, molar conductivity increases steeply on dilution, especially near lower concentrations.