The p K a of the α‑carboxyl group of serine is 2.21 , and the p K a of its α‑amino group is 9.15 . Calculate the average net charge on serine if it is in a solution that has a pH of 8.80 .

Explanation:

The given data is as follows.

         pH of serine solution = 8.00

    of carboxylic group of serine = 2.21

  of amino group of serine = 9.15

Therefore, average net charge on serine will be as follows.

                   =

                   =

                   =

                   = (-0.999) + (0.934)

                   = 0.0660

Thus, we can conclude that average net charge on serine if it is in a solution that has a pH of 8.80 is 0.0660.

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