Solutions that contain high concentrations (10−3M or more) of a weak conjugate acid-base pair and that resist drastic changes in pH when small amounts of strong acid or strong base are added to them are called buffered solutions. Human blood, for example, is a complex buffered solution that maintains the blood pH at about 7.4. How can we identify buffered solutions from their composition and calculate the pH and the concentrations of the reagents in buffered solutions?
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