November 29, 2015

Homework Help: Analytical Chemistry

Posted by Sam on Tuesday, February 26, 2013 at 7:00pm.

Show the predominant form of the amino acid tyrosine at pH=13.9 and ph=7.8. Be sure to include the proper number of hydrogens on heteroatoms and the correct formal charges on atoms.

I calculated the pka values for COOH (pka=2.41) NH3 (pka=8.67), and OH (pka=11.01) but i'm not sure how to draw the structure for tyrosine and what the functional groups for each ph should look like.

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