How do chemical buffer systems resist changes in pH?

1 Answer
anor277
Nov 21, 2016

See this old answer.

Explanation:

A buffer consists of a weak acid and its conjugate base mixed together in APPRECIABLE concentrations. Added #H_3O^+# or #HO^-# tends to be sopped up by the acid or base already in solution, and #pH# change is only marginal. In the absence of a buffer, #pH# might change from 3-4 units.

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