What are some examples of a buffer?

In general, a buffer solution may be made from known quantities of a weak acid and a salt of the weak acid. Some examples of buffers are phosphate buffer (H2PO- and HPO2) ; acetate buffer (CH3COOH and CH3COO-). The pH of a buffer solution varies directly with the ratio of concentrations of its base and acid members.

The following are some of the important examples of duffers.

  • A mixture of acetic acid and sodium acetate.
  • A mixture of formic acid and barium formate
  • Mixture of hydrogen cyanide and potassium cyanide
  • A mixture of carbonic acid and sodium carbonate
  • A mixture of phthalic acid and potassium hydrogen phthalate
  • A mixture of boric acid and borax.

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