pH sal (AF/BF)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
sal AF/BF
About this calculator
The pH Sal (Strong Acid/Weak Base) calculator is a useful tool for determining the acidity or basicity of a chemical solution.
It uses the formula pH = 7 − ½·(pKb + log C), where pKb is the base acid constant and C is the concentration of the base.
This calculator is ideal for cases where one has a weak base and wants to calculate its pH in a solution with known concentration.
However, it is essential to remember that this formula is an approximation and may not be applicable in all cases, especially in complex solutions or under high pressure or temperature conditions.
Frequently asked questions
What is the pH of a sodium chloride (NaCl) solution in water?
To calculate the pH of a sodium chloride solution in water, you need to know the concentration of the solution and the pKb of sodium chloride. Then, you can use the formula pH = 7 − ½·(pKb + log C) to calculate the pH.
What is the difference between pH and pOH?
pH is a measure of the acidity of a solution, while pOH is a measure of the basicity. In a neutral solution, the pH and pOH are equal to 7.
What is the unit of measurement of pH?
pH is a logarithmic unit of measurement, expressed in pH units. A pH of 7 is considered neutral, while values below 7 are considered acidic and values above 7 are considered basic.
Why is it important to calculate the pH of a solution?
Calculating the pH of a solution is important to ensure that it is safe for use and handling. Additionally, pH can affect the stability of chemical reactions and enzyme activity.