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Ostwald Dilution Law Calculator

Degree of dissociation α from Ka and concentration.

Compute the degree of dissociation α of a weak electrolyte from Ostwald's dilution law α = √(Ka / c). Also reports the dissociation fraction as a percentage.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mol/L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

α = √(Ka / c)

In depth

Compute the degree of dissociation α of a weak electrolyte from Ostwald's dilution law α = √(Ka / c). Also reports the dissociation fraction as a percentage.