Chemistry
pH Formula
What is the pH Formula?
Measure of acidity or alkalinity
This formula is widely used in chemistry applications. Understanding when and how to apply it helps you interpret calculator results correctly and catch input errors before they propagate.
Formula
pH = -log10[H+]
Substitute known values into the formula above. Ensure all variables use consistent units before calculating.
Worked Example
10^-7 M gives pH=7
Use the linked calculator below to try your own values and see step-by-step working.
When to Use This Formula
Apply the pH Formula when you need to measure of acidity or alkalinity. It is a standard reference in chemistry coursework, professional practice, and our linked calculators.
Tips & Common Mistakes
- Carry extra precision during multi-step stoichiometry.
- Convert mL to L before molarity calculations.
- Always verify critical results independently for engineering, medical, or legal applications.
Related Calculators
Further Reading
Browse the Formula Library for related formulas, or read educational articles on our Blog.