OH⁻ Concentration from pOH Calculator

Calculate Hydroxide Ion Concentration

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OH⁻ Concentration Calculator

Calculate hydroxide ion concentration from pOH value.

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Base Strength Analyzer

Determine base strength from OH⁻ concentration.

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Understanding OH⁻ Concentration

pOH and [OH⁻]

Key concepts:

  • pOH definition
  • Logarithmic scale
  • Concentration units
  • Base dissociation
  • Solution equilibria

Base Strength

Important aspects:

  • Strong vs weak bases
  • Dissociation constants
  • Buffer solutions
  • Temperature effects
  • Ionic strength

Applications

[OH⁻] important in:

  • Base-acid titrations
  • Buffer preparation
  • Industrial processes
  • Cleaning products
  • Water treatment

Common Values

Reference [OH⁻]:

  • Pure water: 1×10⁻⁷ M
  • 0.1M NaOH: 0.1 M
  • Household ammonia: ~0.01 M
  • Baking soda: ~10⁻⁶ M

Essential OH⁻ Formulas

pOH Definition

pOH = -log[OH⁻]

[OH⁻] = 10⁻ᵖᴼᴴ

Base Dissociation

Kb = [OH⁻][BH⁺]/[B]

pKb = -log(Kb)

Water Equilibrium

Kw = [H⁺][OH⁻] = 10⁻¹⁴

at 25°C