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The ionic conductance of Ba²⁺ and Cl⁻ are respectively 127 and 76 ohm⁻¹ cm² at infinite dilution. The equivalent conductance (in ohm⁻¹ cm²) of BaCl₂ at infinite dilution will be:

1. 139.5
2. 203
3. 279
4. 101.5

Correct answer: 279

Solution

The equivalent conductance at infinite dilution is the sum of the ionic conductances of all ions, weighted by their stoichiometric coefficients.

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