According to the following TLC, choose all compounds that are present in the crude sample, before recrystallization? 1 methyl benzoate   2 triphenylmethanol   3 a non-polar impurity such as biphenyl

Q: Question 4 Student L was extracting trimyristin (structure shown below) from nutmeg using n- hexane.…

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Q: If you run a compound on 4 different TLC plates using the following four different solvent systems…

A: Option (d) pure heptane will have the highest value of Rf.

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Q: Qs4. This is a TLC analysis of 3 individual compounds. The plate was run in 20 % ethyl acetate, 80%…

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Q: solvent front origin

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Q: Pease indicate the compound that best fits in the blank of the separation scheme below. OH HO. H2N'…

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Q: If a compound appears single spotted on a TLC, it indicates that the compound is

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Q: Chemistry 1)Arrange the following in order of increasing Rf in TLC? 3-pentanone, 3-pentanol,…

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Q: 7. A student gets the following results after running a TLC plate of several over the counter…

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Q: which molecule will travel furthest up the TLC plate? aspirin, acetaminophen, ibuprofen, naproxen?

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Q: A student runs a TLC plate of a mixture of four compounds. The TLC plate is shown below. How could…

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Q: A fresh TLC plate is spotted with compound A,B and C, but with methylene chloride as a solvent. How…

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Q: Compound X is developed on a TLC plate using a 3:1 heptane:acetone eluent mixture. The same compound…

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Q: A TLC plate was run in cyclohexane:ethyl acetate 4:1, the pure product, 2 starting materials and…

A: Concepts of Thin Layer Chromatography.

Q: 2. At the end of the extraction lab that you will conduct in a few weeks, you wll repeat this TLC…

A: The crude reaction mixture contains one or more substances in a different molar ratio. The…

Q: 6 The left-hand TLC below was your first attempt to separate two compounds.  You picked ethyl…

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Q: Prelab Questions: 1. In the final product, triphenylmethyl ethyl ether, there is only one oxygen…

A: Sol 1)  Here, starting element are sodium triphenyl methanoate and bromo ethane.

Q: Fill compare a few different developing solvents and examine the effect of the polarity of the…

A: #Q.7: Since hexane is a symmetric hydrocarbon, it is nonpolar.  Ethylacetate is polar due to the…

Q: Using the TLC shown at the right, calculate the Rr values of each of the known compounds (A-D) and…

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Q: When doing extraction: Statement 1: Wash extract with saturated salt solution if organic compound is…

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Q: Arrange the following solvents in order of increasing polarity (least polar to most polar): Propyl…

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Q: The table below shows the result of the TLC of two compounds, P and Q: Compound R, value Developing…

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Q: Which of the following is TRUE? ..... OH X OH Y OH N None of the above. Compounds X and Y are…

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Q: If we are extracting 7 mg of caffeine using 8 ml dichloromethane . Does it make a difference using…

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Q: ) -SH -OCH₂ -NO₂ silica column 20% CHCI₂ 6 Time (min) 8 -CIN 10 -OH -CO₂CH₂-COCH, CHO 12 -NH₂ 400…

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Q: d) What would happen to the Rr of the spots if you increased the polarity of the mobile phase?…

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Q: What is a good TLC stain that can differentiate ethyl cinnamate and ethyl hydrocinnamate? What is a…

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Q: 100% hexanes U=unknown Y5=yellow 5 B1 = blue 1 R3 = red 3

A: Hexane is a non-polar solvent.

Q: why do you treat the tlc with 5% sulfuric acid in ethanol.

A: TLC or Thin Layer Chromatography is a chromatographic technique which is used to isolate and…

Q: Which of these alternative reactants react with Kco, 2-hydroxybenzoic acid to form aspirin?…

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Q: 1-methanol 2- ethanol 3- pentanol

A: HPLC determines the concentration of each component in terms of the intensity of peaks.

Q: Fill out this table, involving the compounds which will be used in this lab: Acetominophen Aspirin…

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Q: Question 6-1: Aromatic ethers can lose a neutral alkene molecule during fragmentation in a mass…

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Q: Given the mass chromatography, identify the peaks of 200, 144, and 115 for 2-Naphthyl-Butylether.

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Q: 11. A TLC plate is spotted with each of the three compounds. The plate is developed using hexanes:…

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Q: A thin layer chromatography experiment is planned to determine the Rf values of four compounds. List…

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Q: 5 cm 2.8 cm Calculate the R, value of the middle spot. Show your work

A: Given : Distance travelled by middle spot solute = 2.8 cm  And distance travelled by solvent = 5 cm…

Q: Rank the compounds from the least to most attracted to the Al2O3 porous binding sites in TLC. i H A…

A: TLC is an analytical technique that is employed to separate the components of a mixture. The TLC…