ProblemSet1 - 114A-I Chemistry 114A (Practice Problem;...

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114A-I 1 Chemistry 114A (Practice Problem; First Midterm) R, the gas constant, equals 8.3145 J/K.mol G = G ° + RT ln Q G ° = -RT ln K eq G = H - T S Amino Acid α - carboxylic acid α -amino acid side chain Alanine 2.35 9.87 Arginine 2.01 9.04 12.48 Asparagine 2.02 8.8 Aspartic Acid 2.1 9.82 3.86 Cysteine 2.05 10.25 8 Glutamic Acid 2.1 9.47 4.07 Glutamine 2.17 9.13 Glycine 2.35 9.78 Histidine 1.77 9.18 6.1 Isoleucine 2.32 9.76 Leucine 2.33 9.74 Lysine 2.18 8.95 10.53 Methionine 2.28 9.21 Phenylalanine 2.58 9.24 Proline 2 10.6 Serine 2.21 9.15 Threonine 2.09 9.1 Tryptophan 2.38 9.39 Tyrosine 2.2 9.11 10.07 Valine 2.29 9.72
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114A-I 2 1. Name different types of bonds you are familiar with? Briefly describe each of them. Give at least one example for each one—rank them based on their energetics. 2. What is the concentration of OH- in a solution in which H+ concentration is 0.00013M? what is the pH of the solution? 3. Calculate the pKa of lactic acid, given that when the concentration of free lactic acid is 0.10 M and the concentration of lactate is 0.087 M, the pH is 4.80.
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ProblemSet1 - 114A-I Chemistry 114A (Practice Problem;...

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