SOLVED: Consider a weak acid HA. For a 0.1 M HA solution the pH = 1.5.Calculate pKa for this acid.
SOLVED: Consider a weak acid HA. For a 0.1 M HA solution the pH = 1.5.Calculate pKa for this acid.
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calculate the fraction of histidine that has its imidazole side chain protonated at ph 73 the pka values for histidine are pk1 18 pk2 imidazole 60 and pk3 92 group of answer choices 5 17 2 9 70842
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SOLVED: a. Calculate pKa's for acetic acid and phosphoric acid. Acetic acid (CH3COOH) Ka = 1.8 x 10^-5. Phosphoric acid (H3PO4) Ka1 = 7.2 x 10^-3, Ka2 = 6.3 x 10^-8, Ka3 = 4.2 x 10^-13.b. Sketch a titration curve of pH vs. volume of base added for both acids, and plot the pKa's.c. If you want to prepare a 0.1 M buffer for pH 4.5, which of the above acids would be the better choice for the buffer? Explain.d. What salt (sodium salt of the conjugate base) and acid would be used to prepare the buffe
SOLVED: a. Calculate pKa's for acetic acid and phosphoric acid. Acetic acid (CH3COOH) Ka = 1.8 x 10^-5. Phosphoric acid (H3PO4) Ka1 = 7.2 x 10^-3, Ka2 = 6.3 x 10^-8, Ka3 = 4.2 x 10^-13.b. Sketch a titration curve of pH vs. volume of base added for both acids, and plot the pKa's.c. If you want to prepare a 0.1 M buffer for pH 4.5, which of the above acids would be the better choice for the buffer? Explain.d. What salt (sodium salt of the conjugate base) and acid would be used to prepare the buffe
numerade.com
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