If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0.3, then the observed freezing point will be % higher than the expected/theoretical freezing point. (Near

Question

If the degree of dissociation of aqueous solution of weak monobasic acid is determined to be 0.3, then the observed freezing point will be  % higher than the expected/theoretical freezing point. (Nearest integer).

Canvas Classes · Accepted Answer

Strategy:
 The observed freezing point depression () factors in the van't Hoff factor (), whereas the expected (theoretical) depression () assumes no dissociation (). The percentage difference in depression is governed by the value of .

Step 1: Calculate the van't Hoff factor ()
For a monobasic acid  ():

Step 2: Relate observed and theoretical depressions

Step 3: Calculate the percentage increase in the magnitude of depression

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