The following molecule with pKa values shown, is an important antibiotic. At pH =11, which pair of species will be most prominent in solution. Choose the correct pair from those shown in boxes A, B, C and D. (Note: In red, the proton/protons removed/added between the two states is highlighted) + H₂N H₂N A A B с + pka 10 H₂N + H₂N + H₂N B F NH NH YH pka-5 N OH + H₂N HN OH Pka ~4 C NH Y + H₂N HN D

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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The following molecule with pKa values shown, is an important antibiotic.
At pH =11, which pair of species will be most prominent in solution.
Choose the correct pair from those shown in boxes A, B, C and D.
(Note: In red, the proton/protons removed/added between the two states is
highlighted)
+
H₂N
H₂N
A
A
B
с
.H
pka 10 H₂N
+
H₂N
H₂N
B
NH
ΝΗ
N-
OH
H pka ~5
OH pka ~4
+
H₂N
HN
ho
NH
+
H₂N
HN
ongs.
D
O
Transcribed Image Text:The following molecule with pKa values shown, is an important antibiotic. At pH =11, which pair of species will be most prominent in solution. Choose the correct pair from those shown in boxes A, B, C and D. (Note: In red, the proton/protons removed/added between the two states is highlighted) + H₂N H₂N A A B с .H pka 10 H₂N + H₂N H₂N B NH ΝΗ N- OH H pka ~5 OH pka ~4 + H₂N HN ho NH + H₂N HN ongs. D O
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