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The pKa of the α-carboxyl group of phenylalanine is 1.83, and the pKa of its α-amino...

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Chemistry

The pKa of the α-carboxyl group of phenylalanine is 1.83, andthe pKa of its α-amino group is 9.13. Calculate the average netcharge on phenylalanine if it is in a solution that has a pH of8.20. If the charge is positive, do not enter a + sign.

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Using Henderson Hasselbalch equation find ratio of deprotonated and protonated form can be calculated as follows pH pKa log COOCOOH substitute data 85 183 log COOCOOH log COOCOOH 85183 log COOCOOH 667 COOCOOH 106677 Thus deprotonated form will be in large    See Answer
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