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Acetic acid undergoes dimerisation in be...

Acetic acid undergoes dimerisation in benzene, the van't Hoff factor i is related to degree of association of acid a, as

A

`i=1 - alpha`

B

`i=1+alpha`

C

`i=1+alpha//2`

D

`i=1-alpha//2`

Text Solution

Verified by Experts

The correct Answer is:
D
`{:(2CH_(3)COOH,overset("Benzene")hArr,(CH_(3)COOH)_(2)),("Initial conc",1,0),("Eqn.conc",1-alpha,alpha//2):}`
`i =(1-alpha+alpha//2)/(1) = 1-alpha//2`
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