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You need to make a pH 6.5 buffer. Which of the following reagents would you choose to make the buffer? Briefly explain. NazCOs NaHCOs HCI NAOH

You need to make a pH 6.5 buffer. Which of the following reagents would you choose to make the buffer? Briefly explain. NazCOs NaHCOs HCI NAOH

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer question 5
12 4. Some contact lens solutions use boric acid buffers to resist pH change. Over what pH range does boric acid have good buffering capacity? Show your work. 5. You need to make a pH 6.5 buffer. Which of the following reagents would you choose to make the buffer? Briefly explain. NazCOs NaHCOs HCI NaOH 6. Calculate the masses of NaH2PO4 H20 and NazHPO, 7H20 needed to make 100.0 ml of a 0.100 M phosphate buffer with pH = 7.40 Mass of NaH2PO, H20 =, Mass of NazHPO4 7H20 =
Transcribed Image Text:12 4. Some contact lens solutions use boric acid buffers to resist pH change. Over what pH range does boric acid have good buffering capacity? Show your work. 5. You need to make a pH 6.5 buffer. Which of the following reagents would you choose to make the buffer? Briefly explain. NazCOs NaHCOs HCI NaOH 6. Calculate the masses of NaH2PO4 H20 and NazHPO, 7H20 needed to make 100.0 ml of a 0.100 M phosphate buffer with pH = 7.40 Mass of NaH2PO, H20 =, Mass of NazHPO4 7H20 =
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