At 25^ C , the molar conductance at infinite dilution for the strong electrolytes NaOH , NaCl and BaCl ₂ are 248 10⁻⁴, 126 10⁻⁴ and 280 10⁻⁴ Sm ² ~mol ⁻¹ respectively. _ m ⁰ Ba ( OH )₂ in Sm ² ~mol ⁻¹ is

Step-by-step solution

_ Na ⁺ ^ + _ OH ⁻ ^ =248 10⁻⁴ Sm ² ~mol ⁻¹ _ Na ⁺ ^ + _ Cl ⁻ ^ =126 10⁻⁴ Sm ² ~mol ⁻¹ _ Ba ^ ²⁺+ _ 2 Cl ⁻ ^ =280 10⁻⁴ Sm ² ~mol ⁻¹ NoW , _ Ba ( OH )₂ ^ = _ BaCl ₂ ^ +2 ^ _ NaOH ^ -2 _ NaC 1 ^ _ Ba ( OH )₂ ^ =280 10⁻⁴+2 248 10⁻⁴-2 126 10⁻⁴ _ Ba ( OH )₂ ^ =524 10⁻⁴ Sm ² ~mol ⁻¹