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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a

101.5

b

203

c

279

d

139.5

answer is D.

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Detailed Solution

BaCl2Ba2++2Cl
ΛBaCl2=ΛBa2++2ΛCl
=127+(2×76)
=279 ohm1 cm2 eq1
Equivalent conductivity =279=2792
=139.5ohm−1cm2eq−1

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