Arginine has pka values of 2.1, 9, and 12.1. It is abbrevaited as H3A±. Calculate pH of 0.02 M solution of arginine added as sodium salt NaHA. Does this answer make sense, why or why not.

Introduction to General, Organic and Biochemistry
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Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter22: Proteins
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Arginine has pka values of 2.1, 9, and 12.1. It is abbrevaited as H3A±.

Calculate pH of 0.02 M solution of arginine added as sodium salt NaHA.
Does this answer make sense, why or why not.  

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