A mixture of dipeptides consisting of Lys-Gly, Thr-His, Ser-Leu, Glu-Gln was applied to column packed with cation-exchange resin at pH 6.O. Which of these dipeptides would be eluted from the column first? O Lys-Gly first O Thr-His first O Ser-Leu first O Glu-GIn first o A mixture of Thr-His and Ser-Leu first
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- An amino acid mixture consisting of lysine, leucine, and glutamic acid is to be separated by ion-exchange chromatography, using a cationexchange resin at pH 3.5, with the eluting buffer at the same pH. Which of these amino acids will be eluted from the column first? Will any other treatment be needed to elute one of these amino acids from the column?In the electrolysis of aqueous sodium bromide, there are two possible anodic reactions: *2H2O(l) ——-> 02(g) + 4H+(aq) + 4e–, E° = 1.23V2Br–(aq) ——–> Br2(g) + 2e-2, E° = 1.08 VWhich reaction occurs at anode and why?A mixture containing glutamic acid, arginine, phenylalanine and valine was subjected to anion exchange chromatography at pH 7.0. Which of the amino acids interacted with the resin (anion exchanger) and last to be eluted with a buffer of decreasing pH? A. Glu B. Val C. Phe D. Arg
- What is the Isoelectric point of Y-R-S (pH 7-11) What is the isoelectric point of N-G-L (pH 1-5) Please do the solutions like in the excel table indicated below and follow the pKa value in the tableFor which of the following generic substances is it possible to isolate the enantiomers? (R1, R2 and R3represent different groups.)Lactic acid 4 g Salicylic acid 5 g Trichloroacetic acid 2 g Flexible collodion qs ad 100 g Sig: wart remover. Use as directed (a) Flexible collodion contains 20% w/w camphor and 30% w/w castor oil. How many grams of each would be contained in 30 g of the mixture? (b) The specific gravity of castor oil is 0.955. H ow many milliliters of the oil is contained in 30 g of the mixture? (c) If the specific gravity of the mixture is 0.781, what are the percent w/v concentrations of lactic acid, salicylic acid, and trichloroacetic acid in the mixture? Answer: (a) 5.34 g camphor and 8.01 g castor oil (b) 8.39 mL castor oil (c) 3.12% w/v lactic acid, 3.91% w/v salicylic acid, and 1.56% w/v trichloroacetic acid Solution of the given answer is needed. Thank you so much and God bless. Happy new year