Conductance Of Electrolytic Solutions

The correct option is (A) : 0.002 N

Step 1: Understand the dissociation of Al₂(SO₄)₃
Aluminium sulfate is a strong electrolyte and fully dissociates in water as: So it produces 2 Al ions and 3 SO₄^2- ions per formula unit. Step 2: Apply Kohlrausch’s Law of Independent Migration of Ions
According to Kohlrausch’s Law, the molar conductivity at infinite dilution is given by: Where:
and are the number of cations and anions respectively.
and are the molar conductivities at infinite dilution of cation and anion. Step 3: Substitute for Al₂(SO₄)₃
Step 4: Conclusion
This matches option (1), hence it is the correct answer.