A chemist runs a thin–layer chromatography (TLC) plate and, after development, forgets to mark the solvent...
A chemist runs a thin–layer chromatography (TLC) plate and, after development, forgets to mark the solvent front. The chemist doesn\'t realize this until the solvent has evaporated. Assuming that accurate Rf values are needed, select the correct course of action for the chemist.
a. Assume that the solvent front is at the top of the plate.
b. Dip the plate in phosphomolybdic acid (PMA) and heat the plate with a heat gun.
c. Run the TLC analysis of these samples again.
d. View the solvent front under UV light.
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A chemist runs a thin–layer chromatography (TLC) plate and, after development, forgets to mark the solvent...
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QUESTIONS TO ANSWER:
Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
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Please draw a thin chromatography plate with the following
terms labelled
1. Origin 2. Stationary Phase 3. Mobile Phase 4. Solvent Front 5. Component "spot" 6. Rf value 7. Development 8. Visualization of spots Define questions 9 and 10 9. What is meant by differential partitioning between stationary and mobile phase? 10. What is the recommended procedure for cleaning a TLC spotting capillary?
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Can someone please help me out with the Rf value
PLEASE!!
Thin Layer Chromatography Procedures 1) Prepare a solvent solution in a 150 mL beaker by using 5 mL of Hexane and 3 mL of ethyl acetate Take one plate and spot (small spots) it with the three different standard solutions given. The standard solutions are 2-nitroaniline, 3-nitroaniline, and 4-nitroaniline. The fourth spot will be the unknown sample obtained. 2) 3) Align these spots at 1 cm from the bottom...
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Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
data. Please let me know how I Would do this if I did)...
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