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The freezing point of a solution containing 0.2g of acetic acid in 20.0 g benzene is lowered by 0.45ºC. Calculate the degree of association of acetic acid in benzene. Assume acetic acid dimerizes in benzene. Kf for benzene = 5.12 K mol–1 kg.

(A) 49.5 % 

(B) 94.5% 

(C) 85.5% 

(D) 58.5%

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Correct Option (B) 94.5% 


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