2. A Tlc plate was run on the fractions (#1-4) collected from a silica gravity column chromatography that was done. The Tlc plate was developed in 20% ethyl acetate/80% hexanes and is shown below. -------- Fraction # 1234 The compounds that were isolated in each fraction are shown below. Label each compound with the number of the fraction that it was likely found in, based on the TLC results. For example, was compound A found in fraction #2? If so, write A = #2 fraction. Do the same for all 4 compounds. CH₂CH₂ .CH3 OH og OH D B CH₂

2. A Tlc plate was run on the fractions (#1-4) collected from a silica gravity column chromatography that was done. The Tlc plate was developed in 20% ethyl acetate/80% hexanes and is shown below. -------- Fraction # 1234 The compounds that were isolated in each fraction are shown below. Label each compound with the number of the fraction that it was likely found in, based on the TLC results. For example, was compound A found in fraction #2? If so, write A = #2 fraction. Do the same for all 4 compounds. CH₂CH₂ .CH3 OH og OH D B CH₂

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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Similar questions

a. Say you are trying to separate two compounds by column chromatography. You run a column and collect the eluent in five fractions. You analyze each fraction by TLC on the same plate (shown below). Based on the TLC plate, how effective was your separation? Consider the purity of each fraction. - - - - - - - - ----| 1 2 3 4 5
In the diagram of TLC for column chromatography, What does light faded looking spots (less or less product, etc.)? Which fractions contain the product? concentrated 1 2 3 4 14 26 15 27 16 28 17 29 5 6 7 8 18 19 30 31 32 20 33 9 21 10 22 11 23 12 13 24 25 34 35 36 37 38
What is stationary phase used is liquid chromatography? What compounds does it bind best and why?
The compounds biphenyl and naphthalene are presented in a mixture. Can hexane be used as a solvent to separate the compounds by column chromatography with silica gel as the stationary phase? Why or why not.
Using the Chromatographs containing the unknown mixture of Acetates and the corresponding relative response factors from the standard mixture, calculate the mole percentage of Peak 2 in the unknown mixture.
2. Thin layer chromatography was performed to find the most effective mobile phase needed to separate a mixture containing three compounds (using silica gel as the stationary phase). TLC analyses were performed using five different mobile phases: (A) pure petroleum ether; (B) 25:75 ethyl acetate:petroleum ether; (c) 50:50 ethyl acetate:petroleum ether (D) 75:25 ethyl acetate:petroleum ether; and (E) pure ethyl acetate. Using the TLC results provided, indicate whether an effective separation was achieved for each of the five mobile phases. Be sure to provide a brief explanation for your answer and identify which mobile phase(s) could be used to offer an effective separation of this mixture using column chromatography. A D E