Question: Unless given in the problem use the following pkas for problems in this set. They will be provided on the exam. Functional Group pka Functional

Unless given in the problem use the following pkas for problems in this set. They will be provided on the exam. Functional Group pka Functional Group pka Carboxyl-terminus 3.5 Histidine R group 6 Amino-terminus 8.5 Cysteine R group 8.2 a-carboxyl (free amino acid) 2 Tyrosine R Group 10.0 a-amino (free amino acid) 9.5 Lysine R group 10.5 Aspartate R group 3.9 Arginine R group 12.5 Glutamate R group 4.2 1. You make a solution by adding 0.4 moles of KH2PO4 (pka = 6.82) to 1 Liter of water. You then adjust the pH to 6.34. a. Indicate which phosphate species are present in solution and at which concentrations. b. Is this solution a good buffer? Justify your answer. 2. Explain the chemical basis for the different slopes of a titration curve. Include a chemical reaction that is going on in each of the two regions you will find on a titration curve to justify your

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