What is the relationship between pH and pOH?
pH + pOH = 14 (at 25 C).
Calculator
Enter your values
Results
pH Level
7.00
Neutral
pOH Level
7.00
pH Analysis
Understanding your pH measurement
Solution Classification
Type:Neutral
pH Value:7.00
pOH Value:7.00
Strength:Weak
Interpretation
This is a neutral solution, like pure water at 25 C.
Common Applications
- Water quality testing (drinking water: pH 6.5-8.5)
- Soil testing for agriculture (most plants: pH 6.0-7.5)
- Swimming pool maintenance (ideal: pH 7.2-7.8)
- Aquarium water monitoring (freshwater: pH 6.5-7.5)
- Food and beverage production quality control
How to Use
Step-by-step instructions
- 1Enter the hydrogen ion concentration [H+] in mol/L.
- 2The calculator will compute the pH and pOH.
pH Formula
pH is the negative logarithm of the hydrogen ion concentration. It measures the acidity or alkalinity of a solution.
pH = -log[H+]Variables:
[H+]Hydrogen ion concentration (mol/L)Example
Neutral Water
Inputs:
[H+]:1.0e-7
Steps:
- 1.pH = -log(1.0 x 10^-7)
- 2.pH = -(-7) = 7
Result:
pH = 7 (Neutral)