pKa to pH Calculator

Precise Buffer Analysis

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Henderson-Hasselbalch Calculator

Calculate pH using the Henderson-Hasselbalch equation.

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Buffer pH Calculator

Calculate buffer pH and capacity.

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Acid Dissociation Calculator

Calculate acid dissociation and pH.

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Understanding pKa and pH

Basic Principles

Key concepts include:

  • Acid dissociation constant
  • Buffer solutions
  • pH scale
  • Ionic equilibria
  • Buffer capacity

Buffer Systems

Important aspects:

  • Buffer Components:
    • Weak acid/base
    • Conjugate pair
  • Buffer Capacity:
    • Concentration effects
    • pH range

Applications

Common uses:

  • Biochemical systems
  • Industrial processes
  • Environmental analysis
  • Research methods
  • Quality control

Advanced Concepts

Additional topics:

  • Activity coefficients
  • Temperature effects
  • Ionic strength
  • Multiple equilibria
  • Non-ideal behavior

Essential Buffer Formulas

Henderson-Hasselbalch

pH = pKa + log([A⁻]/[HA])

Where:

[A⁻] = Base concentration

[HA] = Acid concentration

Buffer Capacity

β = 2.303C(α)(1-α)

Where:

C = Total concentration

α = Degree of dissociation

Acid Dissociation

Ka = [H⁺][A⁻]/[HA]

pKa = -log(Ka)

α = [H⁺]/Ca