AcidKapKaHF7.1 x 10-43.15HNO24.5 x 10-43.35HCOOH1.7 x 10-43.77C6H5COOH6.5 x 10-54.19CH3COOH1.8 x 10-54.74HCN4.9 x 10-109.31C6H5OH1.3 x 10-109.89 Using the table, select appropriate acid/conjugate bases combinations and the proportions of each to prepare buffers at pH values of (i) 4.5 and (ii) 10.0

The objective of this question is to select the appropriate acid/conjugate base combinations and…

Answered: Acid Ka pKa HF 7.1 x 10-4…

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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Question

Acid	K_a	pK_a
HF	7.1 x 10-4	3.15
HNO₂	4.5 x 10-4	3.35
HCOOH	1.7 x 10-4	3.77
C₆H₅COOH	6.5 x 10-5	4.19
CH₃COOH	1.8 x 10-5	4.74
HCN	4.9 x 10-10	9.31
C₆H₅OH	1.3 x 10-10	9.89

Using the table, select appropriate acid/conjugate bases combinations and the proportions of each to prepare buffers at pH values of (i) 4.5 and (ii) 10.0

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