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Thursday, 10 July 2025

Interactive tool for dissociation constant

Ka Calculator

๐Ÿงช Dissociation Constant (Ka) & Degree of Dissociation (ฮฑ) Calculator

The dissociation of a weak acid (like CH₃COOH ⇌ CH₃COO⁻ + H⁺) is incomplete, and its equilibrium can be studied using two important quantities:

  • Degree of Dissociation (ฮฑ): The fraction of acid molecules that dissociate in solution.
  • Dissociation Constant (Ka): An equilibrium constant that quantifies how much the acid dissociates.
Ka = C × ฮฑ²
ฮฑ = √(Ka / C)

๐Ÿงฎ Interactive Calculator:

๐Ÿ“˜ How to Use This Tool:

If you know the initial concentration and the degree of dissociation, this tool will calculate the value of Ka using the formula:

Ka = C × ฮฑ²

Conversely, if you know the value of Ka and the initial concentration, the tool will compute the degree of dissociation using:

ฮฑ = √(Ka / C)

๐Ÿ”ฌ Real Example:

For 0.1 M acetic acid with a degree of dissociation of 0.042:

Ka = 0.1 × (0.042)² = 0.0001764 = 1.76 × 10⁻⁴
๐Ÿ”ฌ Match the Electrochemistry Concepts with Their Formulas
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