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A solution containing 18g of non - volatile non - electrolyte solute is dissolved in 200g of water freezes at 272.07K. Calculate the molecular mass of solute. Given K_(f)=1.86kg//mol and freezing point of water = 273K |
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Answer» Solution :`Delta T_(f) = K_(f)xx m or (K_(f) xx W_(2) xx 1000)/(M_(2) xx W_(1))` `M_(2) = (1.86 xx 18 xx 1000)/((273- 272.07) xx 200)` = 180 g/mol. |
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