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variation of pk values in COO- and NH3+

variation of pk values in COO- and NH3+ - Biochemistry Forum

variation of pk values in COO- and NH3+ - Discuss and post questions regarding the study of Biochemistry. If you need homework help this is the place to ask!


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Old 03-24-2010, 01:50 PM
Pipette Filler
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Default variation of pk values in COO- and NH3+



Hi,
I have a mid term exam tomorrow, and I can't answer a question from a previous exam...
Here is the question with formulas :
img12.imageshack.us/img12/198/img000025k.jpg
Text : The four compounds A, B, C and D all have carboxyl group and three of them have an amino group.
You measure the pK values for these 7 group and obtain* the values : 2, 3, 4, 5, 8, 9 and 10.
Which values correspond to which group in A, B, C and D ?

I have looking for an explanation everywhere, you are my last chance.
Thanks a lot for your answers...
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coo , nh3 , values , variation


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