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Calculate the expected pH values of the buffer systems from the experiments (a,b,c,d), using the Henderson-Hasselbalch equation shown in the Background section. Use for pKa values: carbonic acid = 6.37 and acetic acid = 4.75. Experiment A 5 mL .1 M acetic acid + 5 mL .1 M sodium acetate Experiment B 1 mL .1 M acetic acid + 10 mL .1 M sodium acetate Experiment C 5 mL .1 M carbonic acid + 5 mL .1 M sodium bicarbonate Experiment D 1 mL .1 M carbonic acid + 5 mL .1 M sodium bicarbonate
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Posted: 2011-05-03 16:59:00
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