Q. Which of the following electrolytes will have the highest molar conductance at infinite dilution?
निम्नलिखित में से किस इलेक्ट्रोलाइट्स में अनंत तनुकरण पर उच्चतम मोलर चालकता होगी?
Explanation
Molar conductance at infinite dilution depends on number of ions and mobility.
Na₂SO₄ → 2Na⁺ + SO₄²⁻ ⇒ 3 ions
Higher number of ions → greater conductance.
Others:
NaCl → 2 ions
MgCl₂ → 3 ions (but Mg²⁺ is less mobile)
AlCl₃ → 4 ions (but Al³⁺ is very small and highly solvated, moves slowly)
Hence, Na₂SO₄ has best balance of ion count and mobility.
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