pKa
4.2
4.5
4.8
5.1
5.4
5.7
6.0
6.3
6.6
6.9
= pK
a
[Acid]
2.0
4.0
8.0
10.0
20.0
40.0
50.0
100
200
500
mM
your choices.
Graph.
Graph.
Graph.