Chloroacetic acid was used to make a buffer with a pH = 3.
Which acid would you use to make a buffer with a pH of
4.0?
|
Acid
|
Ka
|
pKa
|
Chloroacetic Acid
|
1.35x10-3
|
2.9
|
Benzoic Acid
|
6.4x10-5
|
4.2
|
Acetic Acid
|
1.8x10-5
|
4.7
|
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