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Question

The resistance of 0.01 N solution of an electrolyte is 210Ω at 298 K with a cell constant of 0.88cm1. Calculate equivalent conductivity of the solution.

A
419.05Ccm2eq1
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B
219.05Ccm2eq1
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C
719.05Ccm2eq1
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D
919.05Ccm2eq1
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Solution

The correct option is A 419.05Ccm2eq1
Value of resistance is given, cell constant is given
So from these we can find the specific conductance and from the specific conductance
We will find the equivalent conductivity
R=210ohm.1a=0.88cm1
k=1R×1a=1210×0.88=4.19×103ohm1cm1orScm1
eq=k×1000N=4.19×103×10000.01
=419.05Ccm2eq1

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