Problem: Which of the following best describes the side chain of arginine at a pH of 11? A. hydrophobic B. nonpolar C. charged and polar D. uncharged but polar E. aprotic

FREE Expert Solution

arginine: pKa 1 = 2.17 (-COOH) ; pKa 2 = 9.04 (-NH2); pKa 3 = 12.48 (R group)

pH > pKa → deprotonate

pH < pKa → protonate 

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Problem Details

Which of the following best describes the side chain of arginine at a pH of 11? 

A. hydrophobic 

B. nonpolar 

C. charged and polar 

D. uncharged but polar 

E. aprotic

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Acid-Base Properties of Amino Acids concept. You can view video lessons to learn Acid-Base Properties of Amino Acids . Or if you need more Acid-Base Properties of Amino Acids practice, you can also practice Acid-Base Properties of Amino Acids practice problems.