Ask Question
20 September, 15:21

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

+3
Answers (1)
  1. 20 September, 18:18
    0
    Using the Henderson-Hasselbach equation, we find the ratio of alanine-COOH to alanine-COO - at pH 7 to be 10power-4. The ratio of alanine-NH2 to alanine-NH3+, determined in the same fashion, is 10power - 1. Thus, the ratio of neutral alanine to zwitterionic species is 10-4 * 10 power-1 = 10power-5.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Minor species. For an amino acid such as alanine, the major species in solution at pH 7 is the zwitterionic form. Assume a pKa value of 8 ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers