Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Phosphoric acid (H3PO4) is a triprotic
acid with pKa values of 2.12, 7.21, and
12.32. It is a useful buffer solution for
pH values near the pKa values. You
have a 0.100 M solution of phosphate
buffer with a pH of 2.50. How many
mL of 0.500 M NaOH solution must be
added to 1.00 L of this buffer solution
to convert it to a buffer at pH 7.70?
Answer in mL
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Transcribed Image Text:Phosphoric acid (H3PO4) is a triprotic acid with pKa values of 2.12, 7.21, and 12.32. It is a useful buffer solution for pH values near the pKa values. You have a 0.100 M solution of phosphate buffer with a pH of 2.50. How many mL of 0.500 M NaOH solution must be added to 1.00 L of this buffer solution to convert it to a buffer at pH 7.70? Answer in mL
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