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Assertion : The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different.Reason : Water is polar and benzene is non-polar.

  1. A
    (a)
  2. B
    (b)
  3. C
    (c)
  4. D
    (d)

Solution & Step-by-step Explanation

Depression in freezing point is a colligative property which depends on the number of particles. In water (polar), acetic acid dissociates into ions, increasing the particle count. In benzene (non-polar), acetic acid undergoes association (dimerization) via hydrogen bonding, decreasing the particle count. Both assertion and reason are true, and the polarity differences of the solvents correctly explain the behavior.

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Assertion : The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different.Reason : Water is polar and benzene is non-polar.
A
(a)
B
(b)
C
(c)
D
(d)

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SolutionsColligative PropertiesMolecular Weight

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