A solution of amino acid having carboxylic side chain was titrated against NaOH. If initial pH of the solution was 2.8. Describe the state of the functional groups of the amino acid at the initial pH and at 10.5. b) Briefly explain how you will separate amino acids mixture using the charge difference between the amino acids. c) A given glycine solution wa

Question

a) A solution of amino acid having carboxylic side chain was titrated against NaOH. If initial pH
of the solution was 2.8. Describe the state of the functional groups of the amino acid at the initial
pH and at 10.5.
b) Briefly explain how you will separate amino acids mixture using the charge difference
between the amino acids.
c) A given glycine solution was titrated against NaOH and pH of the final solution was 4.8.
Given that pKa1 and pKa2 of glycine are 2.34 and 9.60, respectively. Calculate the concentration
of the dissociated amino acid in terms of the undissociated amino acid, if [x] and [y] are the
concentrations of dissociated and undissociated amino acid, respectively.

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