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 solutions 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
A buffer capacity is a solutions ability to resist a change in pH. The higher the buffer capacity, the harder it is to change a solutions acidity.
A buffer capacity if calculated using the total amount of a substance, and analyzing the change in pH over time of the solution.


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