a. State the glycine species at pKa1 and pKa2.  b. Why a pH value is equal to pKa value in the middle of titration? c. State the functional group (s) at pKa1 and pKa2.  d. If aspartic acid is used, determine how many pKa values will be obtained and give reasons. e. Compare the pKa of glycine and pKa of acetic acid and state which compound is a strong acid or weak acid. Explain why.

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.