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CHEMISTRY / ACID-BASE CHEMISTRY

Acid Dissociation Constant Calculator

Convert an acid pKa value to its corresponding dissociation constant. Inspect the chemical relationship, substituted values, result, assumptions, and unit convention in one guided workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

Filter by unit name, symbol, or code. Your current selections remain available.

Preparing the calculator...

Use boundary

Calculation path

Convert an acid pKa value to its corresponding dissociation constant. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

K_a = 10^(-pKa)

What you provide

What you provide

  • Acid pKa, using the same scenario as the other inputs
  • The stated equation, unit convention, and modelling assumption must fit your intended use

What you receive

What you receive

  • Acid dissociation constant from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

The logarithmic definition uses the same standard state and temperature as the supplied pKa.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors