Remember how you learned that a pure liquid distills within a narrow boiling point range, but that a narrow boiling point range doesn’t necessarily imply a pure liquid? Keeping that lesson in mind, explain this: you know without a doubt from a spectroscopic technique that your product mixture contains 2 distinct products. .. yet your tlc plate shows only one spot. How can this be possible?
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- Remember how you learned that a pure liquid distills within a narrow boiling point range, but that a narrow boiling point range doesn’t necessarily imply a pure liquid? Keeping that lesson in mind, explain this: you know without a doubt from a spectroscopic technique that your product mixture contains 2 distinct products. .. yet your tlc plate shows only one spot. How can this be possible?
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- Can you DRAW a TLC plate in an elution chamber that shows 3 lanes each with one spot. Label the following in your drawing: Solvent front Origin Mobile phase Stationary phase Distances needed to measure Rf value for one of the spotsOn performing a tlc of the reaction product on a plate alongside pure benzophenone, a student observed two spots in their product, the stronger corresponding to the benzophenone. What conclusion can be drawn? What is the stationary phase on the tlc plate and why is it effective as a stationary phase?Of Aspirin, ethanol, acetaminophen, ethyl acetate, hexane, and water which could go undetected during HPLC analysis, but could result in a lower than expected melting point, why are they not detected by HPLC analysis?
- You decided to check the purity of your product by TLC. You spotted salicylic acid (lane 1), your crude synthetic aspirin (lane 2) and a sample of pure aspirin (lane 3). After elution, draw a picture of what developed TLC plate (UV visualization) would look like?You spotted a mixture of three compounds, labeled A-C, on a silica plate. The resulting thin layer chromatography (TLC) plate with a mobile solvent mixture of 95 % hexanes and 5 % ethyl acetate is shown below. Which of the spots traveled the furthest up the TLC plate corresponding to spot 3?Write a flow diagram Prepare a written copy of the complete separation scheme for a solution that contains Ag+, Fe3+, Cr3+, Ni2+, Zn2+, and Ba2+. Make sure that your separation scheme includes: separation of each ion into its own individual sample AND precipitation BEFORE a confirmation test is done all phases and visible colors, if applicable reagents and conditions necessary to carry out each step balanced equations, including phases, for each step
- An analyte has a Rf value of 1. What does that say about the solubility of the analyte in the mobile phase as compared to the stationary phase? (please show me all steps)Use a suitable model to explain how separation and identification of a mixture of organic compounds can be achieved with a thin layer chromatographic (TLC) technique.1. What factors can affect a solute's Rf value in thin-layer chromatography?2. Why is it necessary to follow these steps when conducting the experiment? -No contact with the TLC plate should be made with bare hands.-Spots should have a diameter of no more than 1 mm.-Allow sufficient solvent to saturate the chromatography chamber.
- Can you answer this question please according to the prodecure and IR graph Please talk and describe all the details in the IR graph and how pure our substance was accoring to the IR graph 1.063 g of p-acetamidophenol was measured out into a 50 mL round bottom flask along with 8 mL of 1M NaOH in ethanol and a stir bar. This mixture was heated at reflux for 15 min. It was allowed to cool and then 0.80 mL of bromoethane was added to the reaction. The mixture was then heated at reflux for another 15 min. After heating, the solution was poured onto a mixture of ice and water and further cooled on ice and then the solid was collected by vacuum filtration. This solid was then recrystallized from ethanol and water. The final mass of the purified phenacetin was 0.42250 gBelow is a chromatogram observed from chemical separation of chlorinated pesticides using gas chromatography. Water samples were pre-treated using solvent extraction technique prior to injection into GC. Complete the statements below so that the sentences will be accurate and logical. Gas chromatography coupled with __________ __________ detector is suitablefor chlorinated pesticide analysis. ii. Peaks that emerge first will represent compounds that are the most __________.Those compounds will also likely have low boiling points and show the leastinteractions with the stationary phase. iii. Major peaks start to emerge after 24 minutes. Heating the GC oven containing the column will likely __________ the time of chromatographic separation. iv. The peak height or area of an analyte is used to determine its __________ in quantitative analysis.1. What is paper chromatograpy?2. What are the stationary phase and mobile phase in paper chromatograpy?3. What is the principle underlying the paper chromatograpy?4. What is Rf value of a dye or pigment?5. Would you expect that changing the solvent will change the Rf value of the specific solute? Why?6. Suggest simple reasons why the Ni2+ and Fe3+ ions have different Rf values?7. What forces causes the eluting solution to move the chromatographic support material?