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SOLVED:a. Indicate whether a carboxylic acid (RCOOH) with a p Ka value of 4.5 will have more charged molecules or more neutral molecules in a solution with the following pH : 1. pH=1 3. pH=5 5. pH=10 2. pH=3 4. pH=7 6. pH=13 b. Answer the same question for a protonated amine (RNH3) with a p Ka value of 9 . c. Answer the same question for an alcohol (ROH) with a p Ka value of 15 .

SOLVED:a. Indicate whether a carboxylic acid (RCOOH) with a p …

2022年3月2日

A carboxylic acid has two oxygen atoms, each with two nonbonding pairs of electrons. (a) Draw the resonance forms of a carboxylic acid that is protonated on the hydroxyl oxygen atom. (b) Compare the resonance forms with those given previously for an acid protonated on the carbonyl oxygen atom. (c) Explain why the carbonyl oxygen atom of a carboxylic acid is more basic than the hydroxyl oxygen. | Numerade

A carboxylic acid has two oxygen atoms, each with two nonbondin…

2021年6月8日

A naturally occurring amino acid such as alanine has a group that is a carboxylic acid and a group that is a protonated amine. The p Ka values of the two groups are shown. a. If the p Ka value of a carboxylic acid such as acetic acid is about 5 (see Table 2.1 ), then why is the p Ka value of the carboxylic acid group of alanine so much lower? b. Draw the structure of alanine in a solution at pH=0. c. Draw the structure of alanine in a solution at physiological pH (pH 7.4). d. Draw the structure

A naturally occurring amino acid such as alanine has a group that i…

2020年5月25日

On reaction with acid, 4-pyrone is protonated on the carbonyl-g... | Filo

On reaction with acid, 4-pyrone is protonated on the carbonyl-g... | Filo

已浏览 5056 次2023年11月5日

For an amino acid such as alanine, the major species in solution at pH 7 is the zwitterionic form. Assume a p Ka value of 8 for the amino group and a p Ka value of 3 for the carboxylic acid. Estimate the ratio of the concentration of the neutral amino acid species (with the carboxylic acid protonated and the amino group neutral) to that of the zwitterionic species at pH 7 (Section 1.3) | Numerade

For an amino acid such as alanine, the major species in solution at p…

2020年5月20日

A naturally occurring amino acid such as alanine has a group that... | Channels for Pearson

A naturally occurring amino acid such as alanine has a group that..…

已浏览 738 次2023年7月12日

Suggest a suitable buffer range for each of the following substances: (a) Lactic acid (p Ka=3.86) and its sodium salt (b) Acetic acid (p Ka=4.76) and its sodium salt (c) TRIS(p Ka=8.3 ; see Table 2.8) in its protonated form and its free amine form (d) HEPES (p Ka=7.55 ; see Table 2.8) in its zwitterionic form and its anionic form | Numerade

Suggest a suitable buffer range for each of the following substances: …

For an amino acid such as alanine, the major species in solution at p…

For each of the following compounds, indicate the atom tha…

2020年5月25日

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