1. What Is The pH Calculation?

The pH calculation determines the acidity of a solution based on the concentration of hydrogen ions. For strong acids, pH can be directly calculated from the molar concentration using the formula pH = -log[H⁺].

2. How Does The Calculator Work?

The calculator uses the pH formula:

Where:

• moles = mass / molecular weight
• mass = 0.74 g (fixed value)
• V = volume of solution in liters

Explanation: The calculation assumes a strong acid that completely dissociates in water, providing one H⁺ ion per molecule.

3. Importance Of pH Calculation

Details: pH measurement is crucial in chemistry, biology, medicine, and environmental science. It affects chemical reactions, biological processes, and material stability.

4. Using The Calculator

Tips: Enter the molecular weight of the acid in g/mol and the volume of the solution in liters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the mass fixed at 0.74 g?
A: This calculator is specifically designed for calculating pH of 0.74 g of substance dissolved in aqueous solution.

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

Q3: Does this work for weak acids?
A: No, this calculator assumes strong acid dissociation. Weak acids require different calculations involving acid dissociation constants.

Q4: What units should I use?
A: Use grams per mole (g/mol) for molecular weight and liters (L) for volume to maintain consistency with the calculation.

Q5: Can I use this for bases?
A: No, this calculator is specifically designed for strong acids. Base calculations require different formulas involving pOH and Kw.