1. What Are pH and pOH?

pH and pOH are measures of acidity and alkalinity of a solution. pH measures hydrogen ion concentration, while pOH measures hydroxide ion concentration. In aqueous solutions at 25°C, pH + pOH = 14.

2. How Does the Calculator Work?

The calculator uses the following equations:

Where:

• \( [H^+] \) — Hydrogen ion concentration (mol/L)
• \( pH \) — Measure of acidity (unitless)
• \( pOH \) — Measure of alkalinity (unitless)

Explanation: The pH scale ranges from 0 to 14, with 7 being neutral. Values below 7 indicate acidity, while values above 7 indicate alkalinity.

3. Importance of pH Calculation for Pool Water

Details: Maintaining proper pH balance in pool water is crucial for swimmer comfort, effective sanitation, and preventing damage to pool equipment and surfaces.

4. Using the Calculator

Tips: Enter hydrogen ion concentration in mol/L. The value must be greater than 0. For typical pool water, [H+] ranges from 10⁻⁷ to 10⁻⁸ mol/L.

5. Frequently Asked Questions (FAQ)

Q1: What is the ideal pH range for pool water?
A: The ideal pH range for pool water is typically 7.2-7.8. This range ensures effective chlorine disinfection and prevents eye/skin irritation.

Q2: How often should I test my pool's pH?
A: Test pH at least 2-3 times per week during swimming season, and after heavy usage or rainfall.

Q3: What affects pool pH levels?
A: Factors include: chlorine additives, rainwater, debris, swimmers (sweat, oils), and the alkalinity of source water.

Q4: How do I adjust pool pH?
A: Use pH increaser (sodium carbonate) to raise pH or pH decreaser (sodium bisulfate) to lower pH. Always follow manufacturer instructions.

Q5: Why is pH important for pool maintenance?
A: Proper pH ensures: effective chlorine sanitation, prevents scaling/corrosion, maintains water clarity, and provides swimmer comfort.