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When 12.2g of benzoic acid is dissolved ...

When `12.2g` of benzoic acid is dissolved in `100g` of water, the freezing point of solution was found to be `-0.93^(o)C` `(K_(f)(H_(2)O)=1.86Kkgmol^(-1))`. The number (n) of benzoic acid molecules associated (assuming `100%` association) is _______ .

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