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Isoelectric and Isoionic pH

9. Polyprotic Acid-Base Equilibria / Isoelectric and Isoionic pH / Problema 3

Problema 3

Given the pK_a values of histidine as 1.8, 6.0, and 9.2, calculate its isoelectric point.

A

7.6

B

8.0

C

6.5

D

5.0