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JIPMER2004ChemistryIonic Equilibrium

The K a of an acid is 3.2 10⁻⁵ . The degree of dissociation of the acid at concentration of 0.2 M is

Options

  1. A6.0 10⁻²
  2. B1.26 10⁻²
  3. C40 10⁻⁴
  4. D0.04 10⁻³

Correct answer

B. 1.26 10⁻²

Step-by-step solution

From Ostwald's dilution law = K a c aligned & = 3.2 10⁻⁵ 0.2 & =1.26 10⁻² aligned

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