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A conductivity cell (X) employs two elec...

A conductivity cell (X) employs two electrodes having surface area of ` 10 cm^(2)` and separated by a distance of 10 cm. It is filled with 0.01M solution of an electrolyte and connected in the wheatstone bridge. The balanced bridge is shown in the diagram . What is the molar conductivity of the electrolyte ?

A

`10^(3) Scm^(2) mol^(-1)`

B

`250 Scm^(2) mol^(-1)`

C

`100 Scm^(2) mol^(-1)`

D

`500 Scm^(2) mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`(R_1)/(R_2) = (R_1^(1))/(R_2^(1)),(R)/(200)=(25)/(50) implies T =100 Omega , R = P . (1)/(a) , R = (1)/(K) . (1)/(a) implies K=(1)/(R) xx (1)/(a)`
But ` ^^_(M) = (K xx 1000)/(M) = ((1)/(100) xx 1000)/(0.01) implies ^^_(M) = 10^(3) ` unit
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