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AP EAMCET · Chemistry · Solutions

A solution of urea (molar mass 60 g mol-1) boils at 100.20°C at the atmospheric pressure. if Kf and Kb for water are 1.86 and 0.512 KKgmol-1 respectively. The freezing point of the solution will be

  1. A 0.654C
  2. B +0.654C
  3. C 0.726C
  4. D +0.726C
Verified Solution

Answer & Solution

Correct Answer

(C) 0.726C

Step-by-step Solution

Detailed explanation

We know that whenever a non-volatile solute is added to a liquid solvent a boiling point of solution rises while there is a depression in the freezing point of the solution. Now, ∆Tb = Kbm ∆Tb = 100.20-100 = 0.20° C So,…
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