Problem: Amino acids are the building blocks for all proteins in our bodies. A structure for the amino acid alanine isAll amino acids have at least two functional groups with acidic or basic properties. In alanine, the carboxylic acid group has Ka = 4.5 x 10 -3 and the amino group has K b = 7.4 x 10 -5. Because of the two groups with acidic or basic properties, three different charged ions of alanine are possible when alanine is dissolved in water. Which of these ions would predominate in a solution with [H+] = 1.0 M? In a solution with [OH -] = 1.0 M?

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Amino acids are the building blocks for all proteins in our bodies. A structure for the amino acid alanine is

All amino acids have at least two functional groups with acidic or basic properties. In alanine, the carboxylic acid group has Ka = 4.5 x 10 -3 and the amino group has K b = 7.4 x 10 -5. Because of the two groups with acidic or basic properties, three different charged ions of alanine are possible when alanine is dissolved in water. Which of these ions would predominate in a solution with [H+] = 1.0 M? In a solution with [OH -] = 1.0 M?

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.