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Van't Hoff factor of centimolal solu...

Van't Hoff factor of centimolal solution of `K_(3) [Fe(CN)_(6)]` is 3.333 . Calculate the percent dissociation of `K_(3) [Fe (CN)_(6)]`

A

`33.33`

B

`0.78`

C

78

D

`23.33`

Text Solution

Verified by Experts

The correct Answer is:
C
Degree of dissociation `alpha=(i-1)/(m-1)`
m=number of particles in solution
`K_(3)[Fe(CN)_(6)]overset("dissociate as")iff3K^(+)+[Fe(CN)_(6)]^(-3)`
`i=3.333, alpha=(3.333-1)/(4-1)=(77.76%)~=78%`.
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