
Concept explainers
(a)
Interpretation:
The order of elution of aspartate before serine by
Concept introduction:
Ion-exchange chromatography is used to separate mixture of amino acids on the basis of their overall charge by using cation or anion-exchange resins.
Dowex-50 is a cation-exchange resins with less polar used for Cation-exchange chromatography.
Cation-exchange chromatography separate amino acids according to their
(b)
Interpretation:
The order of elution of serine before alanine by
Concept introduction:
Ion-exchange chromatography is used to separate mixture of amino acids on the basis of their overall charge by using cation or anion-exchange resins.
Dowex-50 is a cation-exchange resins with less polar used for Cation-exchange chromatography.
Cation-exchange chromatography separate amino acids according to their
(c)
Interpretation:
The order of elution of valine before leucine by
Concept introduction:
Ion-exchange chromatography is used to separate mixture of amino acids on the basis of their overall charge by using cation or anion-exchange resins.
Dowex-50 is a cation-exchange resins with less polar used for Cation-exchange chromatography.
Cation-exchange chromatography separate amino acids according to their
(d)
Interpretation:
The order of elution of tyrosine before phenylalanine by
Concept introduction:
Ion-exchange chromatography is used to separate mixture of amino acids on the basis of their overall charge by using cation or anion-exchange resins.
Dowex-50 is a cation-exchange resins with less polar used for Cation-exchange chromatography.
Cation-exchange chromatography separate amino acids according to their

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Chapter 17 Solutions
EBK ESSENTIAL ORGANIC CHEMISTRY
- The Ka for sodium dihydrogen phosphate is 6.32 x 10-8. Find the pH of a buffer made from 0.15 M H2PO4- and 0.25 M HPO42- .arrow_forwardThe Ka for lactic acid is 1.4 x 10-4. Find the pH of a buffer made from 0.066 M lactic acid and 0.088 M sodium lactate.arrow_forwardZaitsev's Rule 3) (a) Rank the following alkenes in order of decreasing stability. most stable A B C D > > > (b) Rank the following carbocations in order of decreasing stability least stable B C Darrow_forward
- Calculate the percent ionization for 0.35 M nitrous acid. Use the assumption to find [H3O+] first. K = 7.1 x 10-4arrow_forwardFor each of the following reactions: Fill in the missing reactant, reagent, or product (s), indicating stereochemistry where appropriate using dashed and wedged bonds. If the reaction forms a racemic mixture, draw both structures in the box and write the word “racemic”.arrow_forward5) Using the carbon-containing starting material(s), propose a synthesis based on the following retrosynthetic analysis. Provide structures for all intermediates. The carbon atoms in the product must originate from the starting material(s), but you may use as many equivalents of each starting material as you would like, and any reagent/reaction you know (note: no mechanisms are required). H H =arrow_forward
- Calculate the percent ionization for 0.0025 M phenol. Use the assumption to find [H3O+] first. K = 1.0 x 10-10arrow_forward10:04 AM Tue Mar 25 Sunday 9:30 AM 95% Edit Draw the corresponding structures in each of the boxes below: Ester Name Methyl butyrate (Example) Alcohol Structure H3C-OH Acid Structure Ester Structure Isoamyl acetate Ethyl butyrate Propyl acetate Methyl salicylate Octyl acetate Isobutyl propionate Benzyl butyrate Benzyl acetate Ethyl acetate H₂C OH HCarrow_forward2) For each of the following reactions: (i) (ii) Fill in the missing reactant, reagent, or product (s), indicating stereochemistry where appropriate using dashed and wedged bonds. If the reaction forms a racemic mixture, draw both structures in the box and write the word "racemic". (a) (b) 1) R₂BH 2) H₂O2, NaOH (aq) HBr Br racemic Br + Br Br racemicarrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning



