Question:medium

Acetic acid dimerizes when dissolved in benzene. As a result boiling point of the solution rises by \( 0.36^\circ \text{C} \), when 100 g of benzene is mixed with "X" g of acetic acid. In this solution, if experimentally measured molecular weight of acetic acid is 117.8 and molar elevation constant of benzene is 2.57 K kg mol\(^{-1} \), what is the weight % and degree of dissociation (in %) of acetic acid in benzene?

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For association (dimerization), \( i < 1 \). Always use \( i = \frac{\text{normal molar mass}}{\text{observed molar mass}} \).
Updated On: May 1, 2026
  • 1.62 and 98.3
  • 0.81 and 98.3
  • 0.5 and 86
  • 1 and 98.3
  • 1.4 and 99
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The Correct Option is A

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