The number of correct statements from the following is

(A) Conductivity always decreases with decrease in concentration for both strong and weak electrolytes.

(B) The number of ions per unit volume

Question

The number of correct statements from the following is

(A) Conductivity always decreases with decrease in concentration for both strong and weak electrolytes.

(B) The number of ions per unit volume that carry current in a solution increases on dilution.

(C) Molar conductivity increases with decrease in concentration.

(D) The variation in molar conductivity is different for strong and weak electrolytes.

(E) For weak electrolytes, the change in molar conductivity with dilution is due to decrease in degree of dissociation.

Canvas Classes · Accepted Answer

Strategy:
 Distinguish between the behavior of conductance () and molar conductivity () upon dilution for both strong and weak electrolytes.

Statements Evaluation:
- (A) Conductivity decrease on dilution: True.  (conductance per unit volume) decreases because the total number of ions per unit volume decreases, regardless of electrolyte strength. ✓
- (B) Ions per unit volume increase: False. Dilution means more solvent for the same (or slightly more) ions, so density of charge carriers decreases

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