Acid Ionization Constant Calculator

This calculator can be used to determine the acid ionization constant (Ka) for a weak acid given its concentration and hydrogen ion concentration.

Input Parameters

Calculation Results

Calculation Formula

Ka = [H+][A-] / [HA]

Where:
Ka = Acid Ionization Constant
[H+] = Concentration of Hydrogen Ions
[A-] = Concentration of Conjugate Base (calculated as [H+])
[HA] = Initial Concentration of Acid

Result

Acid Ionization Constant Calculator Usage Guide

Learn how to use the Acid Ionization Constant Calculator and its working principles

How to Use the Calculator

  1. Enter the concentration of hydrogen ions ([H+]) in moles per liter (M).
  2. Enter the initial concentration of the acid ([HA]0) in moles per liter (M).
  3. Click the "Calculate" button to compute the acid ionization constant (Ka).
  4. The result will be displayed in the result field.

Understanding the Acid Ionization Constant (Ka)

The acid ionization constant (Ka) is a quantitative measure of the strength of an acid in solution. It indicates the extent to which an acid dissociates into its ions. The formula for Ka is:

Ka = [H+][A-] / [HA]

Where:

  • Ka = Acid Ionization Constant
  • [H+] = Concentration of hydrogen ions
  • [A-] = Concentration of conjugate base (equal to [H+] for a weak acid)
  • [HA] = Initial concentration of the acid