1. What is pH to [H+] Conversion?

The pH to [H+] conversion calculates the hydrogen ion concentration from the pH value. pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration.

2. How Does the Calculator Work?

The calculator uses the fundamental pH formula:

Where:

• \( [H^+] \) — Hydrogen ion concentration in moles per liter (M)
• \( pH \) — pH value (dimensionless, range 0-14)

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 [H+] Calculation

Details: Knowing the exact hydrogen ion concentration is crucial in chemistry, biology, medicine, and environmental science for understanding solution properties and reaction kinetics.

4. Using the Calculator

Tips: Enter a pH value between 0 and 14. The calculator will display the hydrogen ion concentration in both decimal and scientific notation.

5. Frequently Asked Questions (FAQ)

Q1: What is the [H+] of pure water?
A: Pure water at 25°C has pH = 7, so [H+] = 10⁻⁷ M = 0.0000001 M.

Q2: How does pH relate to acidity?
A: Lower pH values indicate higher [H+] and greater acidity. pH < 7 is acidic, pH = 7 is neutral, pH > 7 is basic.

Q3: What's the [H+] of a strong acid with pH 1?
A: [H+] = 10⁻¹ = 0.1 M. For monoprotic strong acids, this equals the acid concentration.

Q4: Can pH be negative or >14?
A: While theoretically possible with extremely concentrated acids or bases, most practical measurements fall between 0-14.

Q5: How does temperature affect pH?
A: Temperature changes Kw (water dissociation constant), affecting neutral pH. At 37°C, neutral pH is about 6.8.