Thursday, July 14, 2011

Buffer Solutions

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. It has the property that the pH of the solution changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications. Many life forms thrive only in a relatively small pH range; an example of a buffer solution is blood.

Obviously......***POINT: Be able to RECOGNIZE particular ions together as composing a buffer system, know that addition of STRONG/WEAK base (6 items on previous table) will only inc. or dec. the pH SLIGHTLY.

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