stion 16 of 16 Incorrect Incorrect Sapling Learning Calculate the isoionic and i
ID: 580829 • Letter: S
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stion 16 of 16 Incorrect Incorrect Sapling Learning Calculate the isoionic and isoelectric pH of 0.02130 M leucine. Enter your answers to the hundredths place. Amino Acid pKi pk2 Asparagine 2.16 8.73 Glutamine 2.19 9.00 Isoleucine 2.318 9.758 Leucine Methionine 2.189.08 Phenylalanine 2.20 9.31 Proline Serine2.187 9.209 Tryptophan 2.37 9.33 Number Isoionic pH-0.343 2.328 9.744 Number Isoelectric pH=16.036 1.952 10.640 Valine2.286 9.719 Explanation Previous Give Up & View Solution # Try Again @ NextExit- Consider the neutral amino acids to be the intermediate form of a diprotic acid, HL. When dissolved in water, HaL and L- are produced and in equilibrium with HL. At the isoionic point [H2L] and [L-] are not equal. At the isoelectric point [H2L1 - [A ] since the average charge of al species isoelectric point it does not migrate through an electric field. The isoelectric point is determined the pKs values, wheras the isoionic point is determined using Ka. Kw, and concentration Il amino acid species is 0 at the isoelectric point. At a using onlyExplanation / Answer
Isoionic pH means the pH when the concentration of H+ and OH- ions is same.while as isoelectric pH is pH when the charge on caption is equal to the charge on anion or net charge is zero.
Isoionic pH=1/2(pK1+Pk2)
pH=1/2(2.328+9.744)
pH=6.036
We can assume that isoelectric pH and isoionic pH to be same.
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