How to Use This Calculator

Enter the amount of strong acid or base (in moles) you added to the buffer solution, and the resulting change in pH (ΔpH). Click the "Calculate" button to get the buffer capacity.

What Is This Calculator Used For?

This calculator determines the buffer capacity, which measures the buffer's ability to resist changes in pH when small amounts of acid or base are added. A higher buffer capacity indicates a more effective buffer system.

Formula

Buffer Capacity (β) = Δn / ΔpH
Where:
Δn = amount of strong acid or base added (mol)
ΔpH = resulting change in pH

Example

If you add 0.01 mol of HCl to a buffer solution and the pH changes by 0.2, then:
β = 0.01 / 0.2 = 0.05

Reference

Inspired by: Omni Calculator - Buffer Capacity