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The equivalent conductance of 1 M benzoi...

The equivalent conductance of `1 M` benzoic acid is `12.8 ohm^(-1) cm^(2)`. If the conductance of benzoate ion and `H^(+)` ion are `12` and `288.42 ohm^(-1) cm^(2)` respectively. Its degree of dissociation is :

A

0.39

B

`3.9 %`

C

`0.35 %`

D

`0.039 %`

Text Solution

Verified by Experts

The correct Answer is:
B
`alpha=(Lambda_(m))/(Lambda_(m)^(@))=12.8/((42+288.42))=0.0387`
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