Recommended Free Online pH Calculator

pH Calculator is a powerful online tool provided by ChemToolsHub.com, designed to help users quickly calculate the pH, pOH, and H+ and OH- concentrations of chemical solutions. Suitable for students, researchers, and chemistry enthusiasts, it offers a convenient calculation experience.

Features

The pH Calculator supports the following calculation types:

1. Calculate pH from H+ concentration
2. Enter the H+ concentration (mol/L), and the calculator will automatically compute the corresponding pH and pOH.

3. Formula: pH = -log10[H+], pOH = 14 - pH.

4. Calculate pH from pOH
5. Enter the pOH value to get the corresponding pH and H+ concentration.

6. Formula: pH = 14 - pOH, [H+] = 1e-14 / [OH-].

7. Calculate pH from acidic solution
8. For weak acids, input solution concentration and Ka; the calculator solves the quadratic equation to find H+ concentration and computes pH and pOH.

9. Formula: x^2 + Ka·x - Ka·c = 0, where x is H+ concentration.

10. Calculate pH from basic solution
11. For weak bases, input solution concentration and Kb; the calculator computes OH- concentration and returns pH and pOH.

12. Formula: x^2 + Kb·x - Kb·c = 0, where x is OH- concentration.

Instructions

1. Select calculation type

Choose the desired calculation type from the dropdown:

• H+ concentration: input H+ concentration.
• pOH: input pOH value.
• Acidic solution: input solution concentration and Ka.
• Basic solution: input solution concentration and Kb.

2. Input data

Enter the relevant values based on the selected type.

3. Calculate

Click 'Calculate' to process your input and get results.

4. View results

The results display includes: - Calculated pH - Calculated pOH - H+ concentration - OH- concentration

The pH Calculator on ChemToolsHub.com is simple and user-friendly, providing accurate results for experiments, learning, or research. Explore more free tools on ChemToolsHub.com and enjoy chemical calculations!