pH Calculator

    Easily determine the pH of strong and weak acids or bases based on their concentration and dissociation constants.

    Calculate pH

    About pH Calculations

    pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or basicity. The pH scale ranges from 0 to 14, with 7 being neutral, values below 7 being acidic, and values above 7 being basic.

    •Features

    • –Calculate pH for strong and weak acids/bases
    • –Account for acid/base dissociation constants
    • –Handle various concentration ranges
    • –Validate results within pH scale

    •How to Use

    1. 1.Select the type of substance (strong/weak acid/base)
    2. 2.Enter the concentration in moles per liter (M)
    3. 3.For weak acids/bases, input the Ka/Kb value
    4. 4.Click calculate to find the pH value

    •Key Concepts

    • –pH Scale: 0-14 range
    • –Strong Acids/Bases: Complete dissociation
    • –Weak Acids/Bases: Partial dissociation
    • –Ka/Kb: Acid/Base dissociation constants

    •Formulas Used

    • –Strong Acid: pH = -log[H⁺]
    • –Strong Base: pH = 14 + log[OH⁻]
    • –Weak Acid: pH = -log√(Ka × Ca)
    • –Weak Base: pH = 14 + log√(Kb × Cb)

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