Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	Conductivity of all electrolytes decreases on dilution.
Reason (R):	On dilution number of ions per unit volume decreases.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.

Hint: Conductivity inversely proportional to dilution

The conductivity depends upon the number of ions per unit volume. Therefore, the conductivity of all electrolytes decreases

on dilution due to a decrease in the number of ions per unit volume.