Question

What is the effect of dilution on molar conductance?

Hint:

Dilution of an electrolyte solution leads to increased molar conductance due to reduced ion-ion interactions.

Answer 1

Step 1: Understanding Molar Conductance.
Molar conductance (\( \Lambda_m \)) is defined as the conductivity of an electrolyte solution divided by the concentration of the solution. It measures the ability of ions in a solution to conduct electricity.
Step 2: Effect of Dilution.
When an electrolyte solution is diluted, the molar conductance increases. This is because the ions in the solution become more separated as the concentration decreases, leading to less ion-ion interaction and greater mobility of the ions. As a result, the conductivity of the solution increases with dilution.
Step 3: Conclusion.
Thus, the molar conductance increases with dilution because ions move more freely in a less concentrated solution.