Turtney7frog Turtney7frog

19-10-2016
Chemistry

contestada

All amino acids have two ionizable groups (an alpha-amino group with pKa~9.3, and an alpha-carboxyl group with pKa~2.2). Lysine also has an ionizable side-chain (R) with a pKa of 10.5.
What percentage of the Lysine side chain is deprotonated at pH 11.5?

Please show work.

0.099%

9.1%

0.99%

90.9%

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true3diamond true3diamond

25-10-2016

the answer will be 9.1 %

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