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ent Rf of A Rf of B Rf of C 10% ethyl acetate-90% hexanes  .12 .07 .01 20% ethyl acetate-80% hexanes  .34 .29 .10 30% ethyl acetate-70% hexanes  .53 .42 .22

ent Rf of A Rf of B Rf of C 10% ethyl acetate-90% hexanes  .12 .07 .01 20% ethyl acetate-80% hexanes  .34 .29 .10 30% ethyl acetate-70% hexanes  .53 .42 .22

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Solvent Rf of A Rf of B Rf of C
10% ethyl acetate-90% hexanes  .12 .07 .01
20% ethyl acetate-80% hexanes  .34 .29 .10
30% ethyl acetate-70% hexanes  .53 .42 .22
40% ethyl acetate-60% hexanes  .72 .61 .35
The R; values determined on silica gel TLC plates for Compounds A, B, and C are tabulated in Table 11.5. (a) In order to purify Compound A, which of the solvent systems should be used to develop the column in a flash chromatography procedure? (b) Could 90 mg of a mixture of Compound A and Compound B be separated by macroscale flash column chromatography (10 mm column) using 20% ethyl acetate-80% hexanes as the eluting solvent? (c) Could 90 mg of a mixture of Compound A and Compound C be separated by macroscale flash column chromatography (10 mm column) using 20% ethyl acetate-80% hexanes as the eluting solvent?
Transcribed Image Text:The R; values determined on silica gel TLC plates for Compounds A, B, and C are tabulated in Table 11.5. (a) In order to purify Compound A, which of the solvent systems should be used to develop the column in a flash chromatography procedure? (b) Could 90 mg of a mixture of Compound A and Compound B be separated by macroscale flash column chromatography (10 mm column) using 20% ethyl acetate-80% hexanes as the eluting solvent? (c) Could 90 mg of a mixture of Compound A and Compound C be separated by macroscale flash column chromatography (10 mm column) using 20% ethyl acetate-80% hexanes as the eluting solvent?
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