pH and indicators

    Cards (12)

    • K₁
      Equilibrium constant for self-ionisation of water
    • Ionic Product of Water
      K₁ = [H+][OH-]
    • Calculate pH of strong acid

      1. Find [H+] molarity
      2. If [H+] = 10^-5 M, double it
      3. Find [H+] inverse = 10^-pH
    • Limitations of pH scale

      • Only has a range of 0-14
      • Does not work for concentrated solutions
      • Only works for aqueous solutions
    • Strong Acid vs Strong Base Titration
      1. Find equivalence point
      2. Use methyl orange or phenolphthalein indicators
    • Acid
      Proton donor
    • Base
      Proton acceptor
    • Bronsted-Lowry

      Acid-base theory
    • Arrhenius
      Acid-base theory
    • Weak Acid vs Strong Base Titration
      1. Find equivalence point
      2. No obvious equivalence point, no indicator
    • Weak acid

      pH = -log√(Ka * [HA])
    • Weak base

      pH = 14 - (-log√(Kb * [B]))
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