pH of Salt of Weak Base and Strong Acid Calculator

pH of Salt of Weak Base and Strong Acid Calculator

This calculator estimates the pH of a solution containing a salt formed from a weak base and a strong acid.
It uses the approximation: \[ \text{pH} = \frac{\mathrm{p}K_a – \log_{10}(C)}{2} \]

* Enter the salt concentration (mol/L) and the pKₐ of the conjugate acid.

Step 1: Enter Parameters

Example: 0.1 M

Example: 9.25 (for ammonium ion)

Formula: \[ \text{pH} = \frac{\mathrm{p}K_a – \log_{10}(C)}{2} \]