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MHT CET202311 May 2023Evening ShiftChemistryChemical EquilibriumActual

A weak base is 1.42 % dissociated in its 0.05 M solution. Calculate its dissociation constant.

Options

  1. A5.5 10⁻⁵
  2. B4.0 10⁻⁵
  3. C1.8 10⁻⁵
  4. D1.0 10⁻⁵

Correct answer

D. 1.0 10⁻⁵

Step-by-step solution

Percent dissociation =1.42 % =0.0142 For a weak monoacidic base, aligned K _ b & = ^2 C & =(0.0142)^2 (0.05) & =1.0082 10⁻⁵ aligned

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