calculate the isoeltric point
24. Calculate the equilibrium constant for the reaction Glucose-1-phosphate + HO â ä¸gluose +11104 at pH7.0 and temp. 25 C. Gas constant is 8.314 JK moll ÎGo.-20.9 kJ mor' a. 1.2 x 10 b 25 x 10 . 4.6 x to d. 5.1 x 10 . 7.3 x 10 The solution is diluted to a final volume of 200 mL.. What is the pH of the final solution? pKa for this acid is 6.82 a. 6.34 b. 5.45 c 4.56 d. 7.12 e 7.85 26, Glycine hydrochloride crH3N0Hd00H is a diprotic acid that contains a carboxylic acid group and an ammonium group and thus is an amino acid. A solution containing 0.01 M Glycine hydrochloride and 0.2 M of the monodissociated species (CTH&N CH COo) has pH-2.65. What is the pK of this dissociation ? a. 1.75 b. 2.15 c. 2.35 d. 3.05 e. 3.45 27. What is the pH of a solution prepared by dissolving 5.35 g of NHCI in N-14, H-1, Cl .. 35.5 1 Liter of 0.2 M NH? a. 7.58 b. 8.35 c. 9.56 d. 10.46 c 28. Calculate the pH of 0.1 M solution of isolectric Alanine. pk. -2.34, pK.a 9.69 a. 2.34 b. 4.68 c. 1.67 d. 1.17 e. 6.02 29. Caleulate the pK, for the acetic acid with pk,-4.75 30. Calculate the isolectric pH for Glutamic acid with pKai 2.10, pKa2-9.47, and pKR = 4.07 a. 6.77 b. 5.8 c. 3.08 d. 4.07 e. 4.08 31, At pH 7, aspartic acid (pKs are α-carboxylate l .99, a-amino 99, β-carboxylate 39 ) would be charged as follows: A) 0 α-carboxylate, +1 α-amino, 0a-carboxylate, +1 net charge B)-1 α-carboxylate, +1 α-amino,-1a-carboxylate,-1 net charge C) 0 α-carboxy late, -1 α-amino, oa-carboxy late,-1 net charge D) +1 α-carboxylate, -1 α-amino, +1 α-carboxylate, +1 net charge E) +1 α-carboxylate, +1 α-amino, +1 α-carboxylate, +3 net charge
