1. What is pH?

pH is a measure of the acidity or basicity of a solution. It is defined as the negative logarithm (base 10) of the hydrogen ion concentration. The pH scale typically ranges from 0 to 14, with 7 being neutral.

2. How Does the Calculator Work?

The calculator uses the pH formula:

Where:

• \( C \) — Hydrogen ion concentration (mol/L)

Explanation: The formula calculates pH by taking the negative base-10 logarithm of the hydrogen ion concentration in moles per liter.

3. Importance of pH Calculation

Details: pH measurement is crucial in various fields including chemistry, biology, environmental science, medicine, and many industrial processes. It helps determine the acidity or alkalinity of solutions which affects chemical reactions, biological functions, and environmental conditions.

4. Using the Calculator

Tips: Enter the hydrogen ion concentration in mol/L. The value must be greater than 0. The calculator will compute the corresponding pH value.

5. Frequently Asked Questions (FAQ)

Q1: What does a pH value less than 7 indicate?
A: A pH value less than 7 indicates an acidic solution.

Q2: What does a pH value greater than 7 indicate?
A: A pH value greater than 7 indicates a basic or alkaline solution.

Q3: What is the pH of a neutral solution?
A: A neutral solution has a pH of exactly 7 at 25°C.

Q4: Can pH be negative or greater than 14?
A: Yes, for very concentrated strong acids, pH can be negative, and for very concentrated strong bases, pH can exceed 14.

Q5: How does temperature affect pH?
A: The pH scale is temperature-dependent because the dissociation constant of water changes with temperature. The neutral point (pH 7) is only at 25°C.