Acid-base equilibria
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I've prepared two buffer solutions of pH 5.2 and 8.8. The acidic buffer was ammonia with ammonium chloride; and the base buffer was ethanoic acid with sodium ethanoate.
A pH meter was used to measure the values.
I was wondering why the pH 8.8 buffer was less stable over a period of time than many other buffers?
180309
Corrie writes ....
The alkaline buffer will smell strongly of ammonia and it will lose ammonia gas over a period of time, unless in a sealed container. Ethanoic acid is much less volatile.
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updated: 23 March 2009
