Buffer Solutions

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  • Created by: j.everill
  • Created on: 01-04-15 14:33

Buffers are solutions that resist changes in pH when small amounts of acid/base are added or when the buffer is diluted

Acidic Buffer

  • Weak acid (eg. ethanoic acid)
  • pluis salt of acid, formed from strong base
  • pH below 7
  • Eg. ethanoic acid and sodium ethanoate

action of buffer dependant on weak acid equilibrium

If too much alkali/acid is added, buffer cannot compensate, therefore pH will change

Acid acts as a source…

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