Home
Back
pH Formula for Strong Acid/Base:
| From: | To: |
The pH calculation from molarity estimates the acidity or basicity of a solution based on the concentration of strong acid or base. For strong acids/bases that completely dissociate, pH can be directly calculated from concentration using the logarithmic formula.
The calculator uses the pH formula:
Where:
Explanation: The formula calculates the negative logarithm (base 10) of the hydrogen ion concentration for strong acids or hydroxide ion concentration for strong bases.
Details: Accurate pH calculation is crucial for chemical reactions, biological systems, water treatment, and various industrial processes where pH control is essential.
Tips: Enter concentration in mol/L. The value must be valid (concentration > 0). This calculator is specifically for strong acids and bases that completely dissociate.
Q1: What types of acids/bases does this calculator work for?
A: This calculator is designed for strong acids and bases that completely dissociate in solution, such as HCl, NaOH, H₂SO₄, etc.
Q2: What is the pH range for this calculation?
A: The pH scale ranges from 0 to 14, with 7 being neutral. Strong acids typically have pH values below 7, while strong bases have pH values above 7.
Q3: How does concentration affect pH?
A: For strong acids/bases, pH changes logarithmically with concentration. A tenfold change in concentration changes the pH by 1 unit.
Q4: Are there limitations to this calculation?
A: This calculation is only accurate for strong acids and bases. Weak acids/bases require different calculations that account for partial dissociation.
Q5: What units should concentration be in?
A: Concentration should be entered in moles per liter (mol/L or M) for accurate pH calculation.