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The freezing point of a solution of acet...

The freezing point of a solution of acetic acid (mole fraction is 0.02) in benzene is 277.4 K. Acetic acid exists partly as a dimer `2AhArrA_(2)` Determine the equilibrium constant for dimerisation. Freezing point of benzene is 278.4 K (`K_(f)` for benzene is 5)

A

`3.39kg "mol"^(-1)`

B

`33.9kg "mol"^(-1)`

C

`1.68 kg "mol"^(-1)`

D

`16.8 kg "mol"^(-1)`

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