1. What is pH Calculation?

pH calculation determines the acidity or basicity of a solution. For strong acids and bases, the pH can be directly calculated from the concentration using the formula pH = -log C, where C is the concentration of H⁺ ions for acids or OH⁻ ions for bases.

2. How Does the Calculator Work?

The calculator uses the pH formula:

Where:

• \( pH \) — pH value (dimensionless)
• \( C \) — Concentration (mol/L)

Explanation: For strong acids, [H⁺] = C, so pH = -log C. For strong bases, [OH⁻] = C, so pOH = -log C and pH = 14 - pOH.

3. Importance of pH Calculation

Details: Accurate pH calculation is essential in chemistry, biology, environmental science, and many industrial processes. It helps determine the chemical behavior of solutions and is crucial for various analytical and quality control purposes.

4. Using the Calculator

Tips: Enter concentration in mol/L and select whether it's a strong acid or strong base. The concentration must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the pH range?
A: pH ranges from 0 to 14, with 7 being neutral. Values below 7 are acidic, above 7 are basic.

Q2: Does this work for weak acids/bases?
A: No, this calculator is specifically for strong acids and bases where complete dissociation occurs.

Q3: What are some examples of strong acids?
A: Hydrochloric acid (HCl), sulfuric acid (H₂SO₄), nitric acid (HNO₃) are common strong acids.

Q4: What are some examples of strong bases?
A: Sodium hydroxide (NaOH), potassium hydroxide (KOH), calcium hydroxide (Ca(OH)₂) are common strong bases.

Q5: How accurate is this calculation?
A: For ideal solutions and complete dissociation, this calculation provides accurate results. Real-world solutions may require adjustments for activity coefficients.