Strong Acid
Hydrogen Ion Concentration ([H+]): 0.1 mol/L; Acid Dissociation Constant (Ka): 0.000018; Solution Concentration: 0.1 mol/L; Calculation Type: From [H+]
pH: 1
pH Calculator
Chemistry0.0(0)
Calculates the pH of a solution based on hydrogen ion concentration ([H+]), or the acid dissociation constant (Ka) and solution concentration.
More tools:Science & Lab Calculators
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Hydrogen Ion Concentration ([H+]), Acid Dissociation Constant (Ka), Solution Concentration, and Calculation Type in the units shown.
Step 2
Read pH in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Weak Acid
Hydrogen Ion Concentration ([H+]): 0.001 mol/L; Acid Dissociation Constant (Ka): 0.000018; Solution Concentration: 0.1 mol/L; Calculation Type: From Ka and Concentration
pH: 2.872363747
Neutral Solution
Hydrogen Ion Concentration ([H+]): 0.0000001 mol/L; Acid Dissociation Constant (Ka): 0.000018; Solution Concentration: 0.1 mol/L; Calculation Type: From [H+]
pH: 7
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