Indicate the COOH-pKa value of the HAY tripeptide on the titration curve. Titration curve of tripeptide HAY 14 13 12 11 10 7. 6. 3. 2. 1 10 15 20 25 30 35 40 45 Volume 0.1M NAOH titrated Hd
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- A 0.0284 M aqueous solution of lactic acid, HC3H5O3, a substance that accumulates in the blood and muscles during physical activity, is found to be 6.7% ionized. Determine the value of Ka for lactic acid.Consider the titration of 30.0 mL of 0.0700 M HONH2 (a weak base; Kb = 1.10e-08) with 0.100 M HI. Calculate the pH after the following volumes of titrant have been added: (a) 0.0 mLpH = (b) 5.3 mLpH = (c) 10.5 mLpH = (d) 15.8 mLpH = (e) 21.0 mLpH = (f) 27.3 mLpH =calculate the pI for tripeptide R-H-D
- Draw an approximate titration curve of glycine. Label the approximate isoelectric point of the glycine on the curve and be sure to label the axis of the graph. Pk1 is 2.35 and pk2 is 9.78 for glycine.Given the titration curve of the hypothetical polyprotic acid X at 0.100 M concentration (pKa1=4.0, pKa2=8.0, pKa3=12.0) titrated with 0.600 M NaOH, identify the pH at point C, H, E, and M.Calculate the pH of a mixture of 0.25 M acetic acid and 0.20 M sodium acetate. The pKa of acetic acid is 4.76.
- Sketch a titration curve and the structures of the major ionic forms of glutamic acid that exist in solution at the noted parts of the titration curve. Refer to the fully pronated glutamic acid and the pKa.1.2. Using DEAE-cellulose as ion exchange resin, indicate the starting and ending pH for the narrowest experimental pH range used to separate an amino acid mixture consisting of Cys, His and Leu Starting pH: _____ Ending pH: _____Propanamide and methyl acetate have about the same molar mass, both are quite soluble in water, and yet the boiling point of propanamide is 486 K, whereas that of methyl acetate is 330 K. Explain.
- Draw a structural formula for each nucleotide and estimate its net charge at pH 7.4, the pH of blood plasma. Q.) 2'-Deoxyguanosine 5'-diphosphate (dGDP)Indicate the Amino-pKa and the pI value of the HAY tripeptide on the titration curve.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 table