ACID-BASE

• Bronsted-Lowry acids

  species that can donate a proton (H+) to another molecule
• Acid-base property of water

  Water molecule accepts a proton and acts as a Bronsted-Lowry base

  Water molecule donates a proton and acts as a Bronsted-Lowry acid
• Amphiprotic substance


  A substance that can either donate or accept a proton, depending on the circumstances
• pH


  Quantitative measure of the acidity or basicity of aqueous or other liquid solutions
• pH indicator


  A compound that changes color in solution over a narrow range of pH values
• pH indicators


  • Litmus

  Phenolphthalein

  Universal pH paper

  Methyl orange
• Strong electrolytes are completely dissociated into ions in water. Weak electrolytes are incompletely dissociated.
• Bronsted-Lowry acid is a proton donor, Bronsted-Lowry base is a proton acceptor.
• Water molecules can act as both an acid (proton donor) and a base (proton acceptor) through autoionization.
• pH is a quantitative measure of acidity/basicity. pH indicators change color to show the pH range.
• Bronsted-Lowry base

  species that can accept a proton from another molecule