Q.

The ionic conductivity of Ba2+ and Cl- at infinite dilution are 127 and 76 ohm-1 cm2 eq-1, respectively. The equivalent conductivity of BaCl2 at infinity dilution (in ohm-1cm2eq-1) would be :

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203

279

101.5

139.5

answer is D.

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Detailed Solution

BaCl2→Ba2++2Cl−ΛBaCl2∘=ΛBa2+∘+2ΛCl−∘=127+(2×76)=279 ohm−1 cm2 eq−1Equivalent conductivity =279=2792=139.5ohm−1cm2eq−1

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