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buffer - Acids and Bases Buffers B u ffers A C o m p o n e...

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Page ‹#› Acids and Bases - Buffers Buffers A. Components:consist of a reasonable amount of a conjugate pair: • weak acid/conjugate base of the acid Acetic acid/ Acetate ion • weak base/conjugate acid of the base Ammonia/Ammonium ion Acids and Bases - Buffers So what’s so special about a BUFFER ?? B. Function: A Buffer can react with EITHER added strong acid or strong base . ................ let’s look at a sample Suppose you add strong base: HA + OH - -----> H 2 O + A - Note that A - is one of the buffer components !! Result: you consume SOME acid and produce some of the conjugate base. Acids and Bases - Buffers Acids and Bases - Buffers Suppose you add strong acid: A - + H + -----> HA Note that HA is one of the buffer components !! Result: you consume SOME salt (conjugate base) and produce some of the acid. C. Prepared in one of two ways: 1. Direct addition of a weak acid (or base) and the salt of that weak acid (or base) Example: Mix 500 mL of 0.10 M Acetic acid with 500 mL of 0.10 M Sodium acetate.
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