Question

The variation in ${\Lambda }_m$ with concentration for a strong electrolyte can be represented by the equation,
${\Lambda }_m={\Lambda }_m^{\circ }-A{C}^{1/2}$
The value of constant $A$ for a given solvent and temperature depends upon the type of electrolyte i.e., cations and anions produced on dissociation of electrolyte in the solution.
Which of the following statements is correct regarding variations of molar conductivity with concentration?

• A. Molar conductivity decreases with decrease in concentration
• B. Variation in molar conductivity of weak and strong electrolytes is same
• C. Molar conductivity increases with decrease in concentration
• D. When concentration of the solution approaches zero, the molar conductivity is known as conductance

Answer 1

Answer: (C)

Correct answer is (c) Molar conductivity increases with decrease in concentration