Mar 22, 2006 23:18
You have been asked to prepare a buffer of pH 3.20 and have only two reagents available. The first is 500.00 mL of .1 M acetic acid and the other is a jar containing 100 g of KOH (Ka=1.8x10^-5)
if you need 200.00 mL of bufffer, starting with that volume of acetic acid, how many grams of KOH would you need to add? (MM KOH=56.1 g/mol) Assume that the addition of KOH causes negligable volume change.
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