Question

Consider the statements S₁ and S₂.

S₁: Conductivity always increases with decrease in the concentration of electrolyte.

S₂: Molar conductivity always increases with decrease in the concentration of electrolyte.

The correct option among the following is:

Options

• Both S₁ and S₂ are wrong.

• S₁ is correct and S₂ is wrong.

• Both S₁ and S₂ are correct.

• S₁ is wrong and S₂ is correct.

Answer 1

S₁ is wrong and S₂ is correct.

Explanation:

S₁: Conductivity always increases with a decrease in concentration is wrong. Conductivity decreases with dilution because fewer ions are present per unit volume to conduct electricity.

S₂: Molar conductivity always increases with a decrease in concentration is correct. On dilution, interionic attractions decrease, allowing ions to move more freely; hence, molar conductivity increases.