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Solution - Conductance of Electrolytic Solutions - Variation of Conductivity and Molar Conductivity with Concentration

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Question

Why conductivity of an electrolyte solution decreases with the decrease in concentration ?

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The molar conductivity of cation and anion of salt BA are 180 and 220 mhos respectively. The molar conductivity of salt BA at infinite dilution is_____________ .

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(c) 200 mhos.cm2.mol-1                                                                 

(d) 400 mhos.cm2.mol-1

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