The PH scale is from 0 to 14.
The PH scale is from 0 to 14.

# Buffer Capacity Calculator

If you want to determine the amount of change resisted by a buffer in pH, you can use our buffer capacity calculator.

What is Buffer?

Before explaining the buffer capacity, we should know what a buffer is. A buffer is a fundamental aquatic solution in chemistry that carries a compound/mixture of a weak acid and its conjugate base ( A base formed by multiple mixed chemical compounds) or vice versa. The pH value varies lit-bit after adding a minute quantity of concentrated acid/base.

What is Buffer Capacity?

Now, after determining the buffer, we can define buffer capacity as:

quantity of an acid/base mixed in buffer solution's volume before its pH changes the value is called buffer capacity.

## Formula of Buffer Capacity Calculator

To determine buffer capacity instantly, you can use our calculator, or to find it manually, you can use the formula for buffer capacity listed below;

β = n / ΔpH

Or

Buffer Capacity = amount acid or base / (final pH - initial pH)

Where,

• β = Buffer capacity

• n = Amount of moles (of acid/base) mixed in buffer solution (per liter).

• ΔpH = final pH - initial pH (Change in the value of pH)

Note:

### Example

A buffer solution has initial pH & final pH is 7.4 & 6.20 and an amount of acid with 0.05 mol/l. find buffer capacity?

Given data

initial pH = 7.4
final pH = 6.20
amount of acid = 0.05 mol/l

To Find

buffer capacity = ?

Solution

To get buffer capacity, let's use the formula below:

buffer capacity = amount of acid / (final pH - initial pH)

Putting values in the formula:

buffer capacity = 0.05 / (6.20 - 7.4)
buffer capacity = -0.041667 mol/l

### How to use Buffer Capacity Calculator?

The steps to use a buffer capacity calculator are as follows:

Step 1: Enter the value of moles in the first required input.

Step 2: Enter the change in the value of pH in the second required input.

Step 3: The calculator will automatically display an answer on the screen.

### Calculator use

You can use our buffer capacity calculator widely in pharmacy and chemical solutions; it can play a vital role during parenteral (injections) preparations, stability of formulations, intensify the solubility of the drug, and for optimum therapeutic effect.