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Question

A conductance cell was filled with a 0.02 M KCl solution which has a specific conductance of 2.768×103ohm1cm1. If its resistance is 82.4 ohm at 25oC, then the cell constant is:

A
0.2182 cm1
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B
0.2281 cm1
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C
0.2821 cm1
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D
0.2381 cm1
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Solution

The correct option is B 0.2281 cm1
The specific conductance (κ) is the product of cell constant (la) and reciprocal of resistance (1R).

Hence, la=κ×R=2.768×103ohm1cm1×82.4ohm=0.2281cm1.

Hence, option B is correct.

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