Acids and Bases Key Definitions and Theory

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1. An example of a dibasic acid, which can release 2 protons is

  • H2SO4: H2SO4(aq) ---> H+(aq) + HSO4-(aq) and HSO4-(aq) ---> H+(aq) + SO42-(aq)
  • A proton donor
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2. An example of a mono basic acid, which can release only one proton is

  • HCl: HCl(aq) ---> H+(aq) + Cl(aq)
  • A proton donor

3. What is the ionic equation for the reaction between sulphuric acid and potassium hydroxide

  • H+(aq) + OH-(aq) ---> H2O(l)
  • Salt and hydrogen
  • Salt carbon dioxide and water

4. A pH change of 1 changes [H+(aq)] by

  • 10 times
  • pH=-log[H+(aq)]

5. H3PO4 is a

  • Tribasic acid
  • H2SO4: H2SO4(aq) ---> H+(aq) + HSO4-(aq) and HSO4-(aq) ---> H+(aq) + SO42-(aq)

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