Question

The molar conductance of a solution ___________ with dilution while its specific conductance ________ with dilution.

• A. increases, decreases
• B. decreases, decreases
  
• C. increases, increases
  
• D. decrease, increases
  

Answer 1

Answer: (A)

increases, decreases

The molar conductance of a solution increases with dilution, while its specific conductance decreases with dilution. When solution is diluted, the total number of ions increases due to increase in the degree of dissociation. Hence, molar conductance increases with dilution. But the number of ions per unit volume decreases. Hence, specific conductance decreases with dilution.