pH of Salt of Weak Acid and Weak Base Calculator

Estimate the pH of a solution containing a salt formed from a weak acid and a weak base.
The pH is approximated by:
$pH = 7 + \frac{p K_{a} - p K_{b}}{2}$

* Enter the pKₐ of the weak acid and the pK_b of the weak base.

Step 1: Enter Parameters

Weak Acid pKₐ:

Example: 4.76 (for acetic acid)

Weak Base pK_b:

Example: 4.75 (for ammonia)

Step 1: Enter Parameters

Calculated pH