Enter the total amount of acid or base, the initial pH, and the final pH into the calculator to determine the buffer capacity.

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## Buffer Capacity Formula

The following equation can be used to calculate the buffer capacity of a base of acid reaction.

B = n / (pH2-pH1)

- Where B is the buffer capacity
- n is the amount of acid/base (moles/liter)
- pH2 is the final pH
- pH1 is the initial pH

## Buffer Capacity Definition

A buffer capacity is defined as a solution’s ability to resist a change in acidity or pH.

## Buffer Capacity Example

How to calculate the buffer capacity?

**First, determine the amount of acid/base.**Measure the moles per liter of acid/base.

**Next, determine the final pH/**Measure the final pH of the solution.

**Next, determine the initial pH.**Calculate the initial pH of the solution.

**Finally, calculate the buffer capacity.**Calculate the buffer capacity using the formula above.

## FAQ

**What is a buffer capacity?**

A buffer capacity is a solution’s ability to resist a change in pH. The higher the buffer capacity, the harder it is to change the acidity of a solution.

**How is a buffer capacity calculated?**

A buffer capacity is calculated using the total amount of a substance and analyzing the change in pH over time of the solution.