Question

Assertion: The conductance measurement of an electrolytic solution is made by using two conductivity cells having different cell constants gives different values of conductance.
Reason:
The conductance of the solution obtained will be different but the conductivity of solution would be the same.
A.Both assertion and reason are correct and reason is the correct explanation for assertion
B.Both assertion and reason are correct but reason is not the correct explanation for assertion
C.Assertion is correct but reason is incorrect
D.Assertion is incorrect but reason is correct

Answer 1

Hint:The conductance of a solution is a measure of the ability of that solution to carry a current. The transfer of electricity through the solution results from the movement of ions. It is an expression of the ease with which electric current flows through a substance.

Complete step by step answer:
Conductance is defined as the potential of a substance to conduct electricity. It refers to the measurement of how easily electrical current can pass through a material.
Now, electrolytes are those substances that dissolve in a solvent and dissociate into charged ions. The positive ions are known as cations and the negative ions are known as anions. Moreover, the ability of electrolytic solutions to allow the passage of electric current through them is known as electrolytic conductance. The electrolytes can conduct electricity only in the molten or aqueous state and not in any solid form.
The sole reason for the conductivity of electrolytes is the presence of ions in them. The conductivity of electrolytes increases with increase in the concentration of ions and hence there will be more charge carriers if the concentration of ions is more and hence, the conductivity of electrolyte will be high. Further, the cell constant is equal to the distance between the electrodes divided by the surface area of electrodes. For solutions with low conductivities, the electrodes are placed close to each other or are made larger so that the cell constant is less than one.
Hence, the conductance measurement of the electrolytic solution is made by using two conductivity cells having different cell constants i.e. the given assertion is correct but the reason is not the correct explanation.

Hence, option B is correct.

Note:
The conductivity of electrolytes is of greater importance. Their studies have been the base for the development of many devices such as batteries, and many other devices as well. Conductivity can also be used to estimate the total salinity of water.