If a diprotic acid, H2A, has a pK1 = 2.20 and pK2 = 9.31, what is the principal species of this compound at pH = 5.13? O H2A O A2- OHA O H3A+

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
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If a diprotic acid, H2A, has a pK1 = 2.20 and pK2 = 9.31, what is the principal species of this compound at pH = 5.13?

O H2A

O A2-

OHA

O H3A+

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