A student ran an paper chromatography experiment to compare the compound A with known compound of B, C, D, and E. Paper chromatography reveals that compound A is a mixture of two known compounds. Using the chromatogram provided, find the 2 known compounds that contains in the compound A. a Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b с d e Compound B and C Compound C and D Compound D and E Compound C and E A Compound B and E B с K D E Open in Reading View

A student ran an paper chromatography experiment to compare the compound A with known compound of B, C, D, and E. Paper chromatography reveals that compound A is a mixture of two known compounds. Using the chromatogram provided, find the 2 known compounds that contains in the compound A. a Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b с d e Compound B and C Compound C and D Compound D and E Compound C and E A Compound B and E B с K D E Open in Reading View

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter88: Column Chromatography

Section: Chapter Questions

Problem 1P

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Similar questions

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Which of the following statement is false? a. Component with the strong attraction to the support move more slowly than component with weak attraction. b. Chromatography technique used to separate only colored compounds. c. On TLC, single spot does not mean or guarantee a single substance (compound). d. Iodine vapor and UV- lamp are methods used for visualization uncolored compounds.
Regarding TLC: a) Compounds A and B are analyzed side-by-side by TLC on silica gel. The developed chromatogram is shown. Which compound is more polar? b) Three unknown mixtures (X, Y, and Z) are analyzed by TLC. The developed plate is shown. What can be concluded about unknown Y? A. Unknown Y contains exactly two different compounds. B. Unknown Y contains at least two different compounds. C. Nothing can be concluded.
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Iman has a mixture of two compounds A and B. A is a protein, and B is a lipid. He plans to separate the mixture using a column chromatography technique. He packed the column with amino bonded with siloxane material and use a mixture of 20:80 of water: hexane as the mobile phase. i) Sketch the apparatus set up for the chromatographic technique used by Iman. Use the correct chromatographic terminologies to label all of the apparatus, materials, and phases. ii) Predict the sequence of elution when the mixture was loaded onto the separation column. Justify your answer. iii) After the first compound was eluted, Iman discovered that the second compound was taking too long to pass through the column. Please suggest any strategies that could be used to aid the elution process.
Question: Using a sample of aspirin for HPLC analysis. If the aspirin was contaminated (wet) with trace amounts of a solvent such as ethyl acetate, hexane, or water, would this contaminant be detected and appear as a peak in the HPLC chromatogram? Briefly explain based on the type of detector used in HPLC analysis and what type of compounds can be detected. My Answer: The HPLC analysis detects chromophores, compounds with multiple double bonds. Since water, ethyl acetate, and hexane all lack multiple pi bonds this will not be detected in the HPLC. -Question for you, is this complete (and correct), and should I include anything about UV detection? Is UV detection used in HPLC? I thought it was only used on TLC to show compunds that arent visable.