According to the following TLC, do you see any evidence on the TLC that product was lost? a Yes, TLC shows the product is also in the mother liquor (filtrate). b Yes, TLC shows product in the crude sample. c No, TLC is not quantitative. d No, there is no evidence on the TLC that the product was lost

Question 7 Borneol and isoborneol were formed in a reaction. Use the following GC chromatogram of the isoborneol and borneol dissolved in acetone to answer the question: Please note that the question is below the chromatogram. Counts 14000- 12000 10000- 8000 6000- 4000 2000 0 10 0.5 GC of Boreal and Isobomeol 0.82 1.5 Time (min) Peak Area 8.06E+04 Component Acetone Isoborneol Borneol Which of the isomers, isoborneol or borneol, has the highest concentration in the mixture and why? 4.84E+04 1.61E+04 Boiling Point (deg. C) 56 2.14 210 2.45 213

Draw a magnified diagram of a TLC plate in a developing chamber and indicate the following a) developing solvent b) TLC plate c) original spot d) solvent front and e) compounds beginning to separate on the TLC plate.

What is the purpose of thin layer chromography lab? What is a hypothesis I can use when conducting a TLC lab and how can that hypothesis be tested?

Based on TLC, how can you tell if the reaction is complete and what is the relevvance of the multiple marks in the lanes of the tlc? PROCEDURE To a six inch test tube was added thiamine hydrochloride (0.65 g), followed by water (2mL). The mixture was gently shaken until homogeneous, and then ethanol (7.5 mL)was added. Finally, sodium hydroxide (10%, 1.5 mL) was added and the mixture wasgently stirred to ensure complete mixing.Benzaldehyde (3.8 mL) was then added at room temperature in one portion with gentlestirring. The pH of the resulting reaction mixture was determined and adjusted to >10by dropwise addition of 10% sodium hydroxide. The reaction mixture was then partiallysubmerged in a 65 °C water bath2 and the progress of the reaction was periodicallymonitored by TLC analysis.Once TLC analysis indicated that the reaction was complete, the reaction mixture wascooled to approximately room temperature, and then chilled in an ice-water bath. Theresulting precipitate was collected by…

110.89 mg of an impure sample of the drug was diluted in 100 ml and injected in a HPLC, the AUC of the major peak in the chromatogram integrated 1294 units. A standard solution containing 1.01 mg/ml of this drug was then injected in the same HPLC and the resulting peak integrated 2228 units. What is the %w/w of purity for this sample?(One decimal place, no units)

How is TLC useful in determining the identity of a sample?

Organic Chemistry, Column questions