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If equivalent conductance of 1 M benzoic...

If equivalent conductance of `1 M` benzoic acid is `12.8 Omega^-1 ~cm^2` and if the conductance of benzoate ion and `H^*` ion are 42 and `288.42 Omega^-1 ~cm^2` respectively, its degree of dissociation is

A

0.39

B

0.039

C

0.0035

D

0.0035

Text Solution

Verified by Experts

The correct Answer is:
B
`alpha=(wedge_(m))/(wedge_(m))=(12.8)/(42+288.42)=0.0387` percentage dissociation =0.38 x100=3.9 %
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