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The equivalent conductance of (M)/(20)so...

The equivalent conductance of `(M)/(20)`solution of a weak momobasic acid is 10 mhos `cm^(2)` and at infinite dilution is 200 mhos `cm^(2)`. The dissociation consant of this acid is :-

A

`1.25xx10^(-4)`

B

`1.25xx10^(-5)`

C

`1.25xx10^(-6)`

D

`6.26xx10^(-4)`

Text Solution

Verified by Experts

The correct Answer is:
A
`alpha=(Delta_(m)^( c))/(Delta_(m)^(o)),K_(a)=(Calpha^(2))/(1-alpha)`
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