pKa Acid pK. HC„H;O, 4.76 HC,H,0, 4.20 HСIO, 1.92 НСНО, 3.74 HCN 9.40 %3D acetic benzoic chlorous formic hydrocyanie hydrofluoric hypochlorous monochloroacetic HC,H,CIO, 2.87 HF 3.17 HOCI 7.53 nitrous HNO, 3.29 НОСН, 9.80 phenol

World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter3: Chemical Foundations: Elements, Atoms, And Ions
Section: Chapter Questions
Problem 57A
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 Consider the list of acids and their pKa values attached

What two compounds would be best to use in preparing a pH 9.0 buffer solution? Justify your answer. Assume you have the acids and the sodium salts of their conjugate bases available to you.

pKa
Acid
pK.
HC„H;O, 4.76
HC,H,0, 4.20
HСIO, 1.92
НСНО, 3.74
HCN 9.40
%3D
acetic
benzoic
chlorous
formic
hydrocyanie
hydrofluoric
hypochlorous
monochloroacetic HC,H,CIO, 2.87
HF 3.17
HOCI 7.53
nitrous
HNO, 3.29
НОСН, 9.80
phenol
Transcribed Image Text:pKa Acid pK. HC„H;O, 4.76 HC,H,0, 4.20 HСIO, 1.92 НСНО, 3.74 HCN 9.40 %3D acetic benzoic chlorous formic hydrocyanie hydrofluoric hypochlorous monochloroacetic HC,H,CIO, 2.87 HF 3.17 HOCI 7.53 nitrous HNO, 3.29 НОСН, 9.80 phenol
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