Explain how Thin Layer Chromatograpy (TLC) was used to monitor the progress of the second step of the diantilis synthesis ( the conversion of the benzyl alcohol into the diantilis product). Illustrate your answer by drawing representative TLC plates.
.B .A ---------- |
.B
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the first the plate is while progress of reaction which shows A= UNRAECTED BENZYL ALCOHOL
AND B= AMOUNT OF PRODUCT FORMED
in the secon tlc plate there is only spot of product is seen and not the starting benzyl alcohol. this means that
by using tlc conversion of second alcohol is monitored.
Explain how Thin Layer Chromatograpy (TLC) was used to monitor the progress of the second step...
Wanting to monitor the reaction progress you decide to use normal phase thin-layer chromatography, but do not know what the best conditions are to use. If you had the standards for all potential products and your starting materials, outline how would you go about determining the best TLC conditions for monitoring the reaction progress. Provide drawings of an ideal TLC plate with the number of theoretical products you would expect and their relative positions. How do you know when the...
TLC is often used to monitor the progress of chemical reactions. For example for the reaction A + B -----> C, how could you determine when the reaction is done? Explain thoroughly.
1.a IR spectroscopy and Thin Layer Chromatography (TLC) is very convenient in tracking reactions. Explain How you used both IR and TLC to track your reaction. Was your reaction complete when you did your initial TLC check? If so, how can you tell? 1.b Discuss how yield can be correlated to the efficacy of a reaction? Why are yields never 100%?
Thin layer chromatography 6. When should a mixed-solvent system be used for TLC? Explain. 7. Is the order of elution of the components the same for TLC as for column chro- matography? Explain bow.the various fractions can be analyzed from a gravity column.
Can you help me answer the questions for the Introduction/Background? 1. Introduced the techniques of thin-layer and flask column chromatography. Discuss how a solvent is elected as eluent. 2. Discuss all the applications of TLC. What is it used for? 3. Discuss the mobile and stationary phases of TLC and column chromatography. 4. Explain how column chromatography can be used to separate a mixture on a larger scale than TLC. Post-Lab: Objective State the objective of the experiment in your...
In thin layer chromatography, would a more polar solvent increase or decrease the Rf values. Explain your answer by referring to TLC theory (stationary phase, moving phase, polarity...)
A student monitored the reaction progress of the reduction of 4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC. 30% ethyl acetate in petroleum ether was used as the elution solvent. TLC plates available in the laboratory were coated with the common absorbent silica gel (SiO2.xH2O) which contains polar hydroxyl (OH-) groups. c. The crude product moves slower than the starting material with the mobile phase in the TLC plate. Briefly explain a possible reason for the observation based on the chemical structures...
Explain how you used TLC analysis to identify each product obtained from the dihydroxylation reactions. Explain why 100% ethyl acetate was used to develop your TLC plate (and not 100% hexane or a mixture of hexane/ethyl acetate)?
Classify and breifky explain the different patterns of genetic inheritance in humans Questions for the Thin Layer Chromatography Laboratory 1. Why can't you use a pen to mark the origin of a TLC plate? Be explicit in your answer. 2. You were impatient to see how long it would take for your sample to resolve on the TLC plate, so you constantly removed the top from the chamber. Please explain why this is an incorrect practice. 3. What happens when...
Please explain what is going on in this lab for STEP 3. what are some important factors? Multistep Synthesis Preparation of 4,4-Diphenyl-3-buten-2-one! This experiment illustrates se multistep synthesis, in which the the next. This process is very common iment illustrates several important concepts of organic synthesis. It is a synthesis, in which the product of one reaction becomes the starting material of This process is very common in industry and research, and demands careful to vields and techniques. The experiment...