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In some solutions, the concentration of H3O+ remains constant even when small amounts of strong acid or strong base are added to them. These solutions are known as :

Option: 1

  Ideal solutions

Option: 2

  Colloidal solutions

Option: 3

  True solutions

Option: 4

  Buffer solutions

Answers (1)


The solution which resists the change in pH on dilution or with the addition of a small amount of acid or base is called buffer solution.

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