Properties of Acids

• Properties of Acids: An acid is a substance that produces hydrogen ions (H+) when dissolved in water. Acids are proton donors.

• Indicators of an Acid:

  • Have pH between 1 (strong) and 6 (weak)
  • Turns blue litmus red
  • Turns methyl orange indicator red
• Strong acids completely ionize in water producing lots of H+ ions
• Weak acids partially ionize in water producing few H+ ions
• Chemical properties of acids:

  • Acid + metal → salt + hydrogen gas
  • Acid + base → salt + water
  • Acid + metal carbonate → salt + carbon dioxide + water