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The cell constant of a conductivity cell...

The cell constant of a conductivity cell is usually determined by measuring the resistance of the elctrolytic solutions `"_____"` whose conductivity is already known accurateble various concentrations and at different temperatures.

A

`KCl`

B

`HCl`

C

`NaCl`

D

`LiCl`

Text Solution

Verified by Experts

The correct Answer is:
A
The quantity `1//A` is called cell constant denoted by the symbol `G^(**)`. It depends on the distance between the electrodes and their area of cross-section and has the dimension of `"length"^(-1)` and can be calculated if we knoew `l` and `A`. However, measurement of `l` and `A` is not only inconlvenient but also unreliable .
`KCl` solutions are generally used because their conductivity is known accurately at various concentrations and temperatures.
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