Question

Define conductivity and molar conductivity for the solution of an electrolyte

Answer 1

Explanation:

Hey mate.....

Conductivity = Reciprocal of resistivity.

So..... K = length /Resistance ×Area

So. The conductance of a solution of 1m length having an area of 1sq.cm is conductivity of an electrolyte.

Molar conductivity is defined as the conductance of volume V of a solution containing 1 mole of the electrolyte kept bw the electrodes with the area of cross sec A and length L.

So.. Molar conductivity = k A/l.

Hope this would help u...

Answer 2

Answer :

• Conductivity : It may be defined as the conductance of 1 cm³ of the solution of the electrolyte.

• Molar Conductivity : It is defined as the conductivity of an electrolytic solution containing 1 mole of the electrolyte.

The conductance of a solution depends upon the number of ions in the solution. The greater the number of ions, the greater is the conductance. The conductivity of a solution decreases with dilution, decreasing the concentration of the electrolyte in solution. This is due to decrease in the number of ions per unit volume of the solution.

But molar conductance of a solution increases with dilution because degree of ionisation or mobility of ions increases.