1. What is pH Calculation From Molarity?

pH calculation from molarity involves determining the acidity or basicity of a solution based on the concentration of hydrogen ions (H⁺) or hydroxide ions (OH⁻). For strong acids and bases, this calculation is straightforward using the formula pH = -log₁₀(C).

2. How Does the Calculator Work?

The calculator uses the pH formula:

Where:

• \( C \) — Concentration of the solution (mol/L)
• For strong bases: pOH = -log₁₀(C) and pH = 14 - pOH

Explanation: The pH scale is logarithmic, meaning each whole pH value below 7 is ten times more acidic than the next higher value.

3. Importance of pH Calculation

Details: Accurate pH calculation is essential in chemistry, biology, environmental science, and many industrial processes. It helps determine the corrosiveness of solutions, biological compatibility, and chemical reaction rates.

4. Using the Calculator

Tips: Enter concentration in mol/L and select whether it's a strong acid or strong base. The calculator will compute the pH value accordingly.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between strong and weak acids/bases?
A: Strong acids/bases completely dissociate in water, while weak ones only partially dissociate. This calculator is designed for strong acids and bases only.

Q2: What is the pH range?
A: The pH scale typically ranges from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Q3: Can I use this calculator for weak acids or bases?
A: No, weak acids and bases require additional calculations involving equilibrium constants (Ka or Kb).

Q4: What if my concentration is very low?
A: For concentrations below 10⁻⁷ M, the contribution of water's self-ionization becomes significant and must be considered.

Q5: Why is the pH calculation logarithmic?
A: The logarithmic scale allows us to work with the wide range of hydrogen ion concentrations found in solutions (typically from 1 to 10⁻¹⁴ M).