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Question

The electrodes in a conductivity cell have area 1.2×104m2 and they are fixed 3×103m apart. A solution containing 200 g equivalent of the electrolyte per m3 of the solution has a resistance of 60 ohm at 298 K. Calculate the equivalent conductivity of the solution.

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Solution

λeq=K×1000N
N=200g.eqm3=200g.eq1000L
0.2g.eqL
k=cx=lRA
=3×103mohm160×1.2×104m2
λeq=512×10000.2Lg.eqohm1m1
λeq=2083.333ohm1m1g.eqL1

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