1. What is pH Calculation?

pH calculation involves determining the acidity or alkalinity of a solution using the relationship between pH and pOH. The pH scale ranges from 0 to 14, with 7 being neutral, values below 7 acidic, and values above 7 alkaline.

2. How Does the Calculator Work?

The calculator uses the pH formula:

Where:

• \( pH \) — Measure of hydrogen ion concentration (dimensionless)
• \( pOH \) — Measure of hydroxide ion concentration (dimensionless)
• 14 — Constant representing the ionic product of water at 25°C

Explanation: This formula demonstrates the inverse relationship between pH and pOH in aqueous solutions at standard temperature.

3. Importance of pH Calculation

Details: Accurate pH calculation is essential in chemistry, biology, environmental science, and many industrial processes. It helps determine solution properties, reaction rates, and biological compatibility.

4. Using the Calculator

Tips: Enter the pOH value (must be ≥0). The calculator will compute the corresponding pH value using the standard formula.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between pH and pOH?
A: pH and pOH are inversely related through the equation: pH + pOH = 14 at 25°C.

Q2: What does a pOH of 1.4 indicate?
A: A pOH of 1.4 corresponds to a pH of 12.6, indicating a strongly alkaline solution.

Q3: Does temperature affect the pH-pOH relationship?
A: Yes, the ionic product of water changes with temperature, so the sum pH + pOH may vary from 14 at different temperatures.

Q4: What are typical pH values for common substances?
A: Battery acid: ~0, Lemon juice: ~2, Pure water: 7, Sea water: ~8, Bleach: ~12.5

Q5: How accurate is this calculation?
A: This calculation provides theoretical values. Actual measurements may vary slightly due to temperature effects and other solution properties.