Question

Which of the following expressions correctly represents the
equivalent conductance at infinite dilution of Al₂(SO₄)₃,
Given that ∧° Al³⁺ L and ∧°SO₄²⁻ are the equivalent
conductances at infinite dilution of the respective ions?
(a) 1/3 ∧°Al³⁺ + 1/2 ∧°SO₄²⁻
(b) 2∧°Al³⁺ + 3∧°SO₄²⁻
(c) ∧°Al³⁺ + ∧°SO₄²⁻
(d) (∧°Al³⁺ + ∧°SO₄²⁻) × 6

Answer 1

$\huge{\bold{\red{\star{\pink{Heya !}}}}}$

Option[A] is the answer.

Answer 2

Expression that correctly represents the

equivalent conductance at infinite dilution of Al₂(SO₄)₃ is :

• Given : ∧° Al³⁺ L and ∧°SO₄²⁻ are the equivalent

conductances at infinite dilution of the respective ions

• Kohlrausch’s law states that the equivalent conductivity of an electrolyte at infinite dilution is equal to the sum of the conductances of the anions and cations. If a salt is dissolved in water, the conductivity of the solution is the sum of the conductances of the anions and cations.

• Hence, Answer is ∧°Al³⁺ + ∧°SO₄²⁻ (option c)