Homework Answers
Compund that show more interaction with stationary phase will show low Rf value. As we know stationary phase is polar so more polar compound will show low value of Rf due to more interaction with stationary phase. In above compund alcohol compound is more polar then other two., so it show low value to Rf
Ether is less polar then other two.So least interaction with stationary phase and it show high value of Rf
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Thin Layer Chromatography Postlab Problems 1) Which of the following compounds would have the highest Rs?...
Which of the following statements regarding thin layer chromatography are TRUE? Partition chromatography separates compounds based...
Which of the following statements regarding thin layer chromatography are TRUE? Partition chromatography separates compounds based on how they distribute themselves between the stationary and mobile phases. In thin layer chromatography, a polar organic compound will be attracted to the adsorbent and therefore travel further up the plate than a non-polar compound The Rf value is independent of the adsorbent material used. In thin layer chromatography, a polar organic compound will be repelled by the adsorbent and therefore travel not...
1. What are the main differences between thin layer chromatography (TLC) and column chromatography (CC)? 2. Are CC...
1. What are the main differences between thin layer chromatography (TLC) and column chromatography (CC)? 2. Are CC and TLC operations conducted concurrently? Explain. 3. Name a few packing materials used in packing columns in Column Chromatography operations. 4. Explain the role of eluting solvent(s) in column chromatography procedures. 5. When performing column chromatography, which of the following compounds would you expect to elute first: Ferrocene of acetylferrocene? Explain why.
Thin layer chromatography is used for (select all that apply) 1. following the course of a...
Thin layer chromatography is used for (select all that apply) 1. following the course of a reaction. 2. determining the number of compounds in a mixture. , helping to establish if two compounds have identical retention times under the same TLC conditions. 4. determining the melting point of a solid sample. determining the number and types of bonds present in a compound.
1. What is the purpose of Thin-Layer Chromatography (TLC)? 2. What are the phases involved in...
1. What is the purpose of Thin-Layer Chromatography (TLC)? 2. What are the phases involved in TLC? 3. What is coated on the TLC plate? 4. What is the purpose of lining the wall of the TLC chamber with paper? 5. Why is it important to use a small amount of the mobile phase? 6. Why should you remove the TLC plate before the mobile phase reaches the top? 7. What type of compounds are visible with UV light? 8....
2. An unknown compound was analyzed using thin layer chromatography, its constituted of two components (A...
2. An unknown compound was analyzed using thin layer chromatography, its constituted of two components (A and B) as shown in the TLC (Silica coated stationary phase; Chloroform and Ethyl acetate as mobile phase). The mixture was then loaded onto column with silica as the stationary phase and the same solvent system was used. (2 points) Column Chromatography TLC time A В Predict the order of elution of the compounds (A and B). which one would be eluted first/last and...
1) Order the compounds based on their affinity for the stationary phase typically used in column...
1) Order the compounds based on their affinity for the stationary phase typically used in column or thin layer chromatography: Highest affinity to lowest affinity: Alcohols Ethers Hydrocarbons Ions 2) How many molecules of biodiesel are produced for each molecule of vegetable oil?
Draw the thin layer chromatography plates that would result if you ran a plate containing : benzil in lane 1, stilbene i...
Draw the thin layer chromatography plates that would result if you ran a plate containing : benzil in lane 1, stilbene in lane 3 and a co-spot in lane 2 in 5% ether in hexane how about in 2% ether in hexane?
2. The diagram below shows the results of a simple thin layer chromatography experiment. height reached...
2. The diagram below shows the results of a simple thin layer chromatography experiment. height reached by the solvent the "solvent font a) Describe briefly, but precisely, what you would have done in order to get to this stage. You can assume that you have been given a suitable thin layer chromatography plate. b) Why is there a cover on the beaker? c) In order to help identify the things in a chromatogram, you can measure the Rf value for...
Thin layer chromatography (tlc) Questions 1. List three factors that affect R¢ values in adsorption TLC....
Thin layer chromatography (tlc)
Questions 1. List three factors that affect R¢ values in adsorption TLC. Explain. 2. Explain how to prepare sample solutions and capillary applicators. 3. Describe the basic principle underlying all chromatographic processes.
Question 19 1 pts Which technique would be best suited to separate a mixture of compounds...
Question 19 1 pts Which technique would be best suited to separate a mixture of compounds that differ primarily by their boiling point, 110 °C versus 145 °C? infrared spectroscopy distillation O thin layer chromatography O reflux O liquid-liquid extraction
1. What are the main differences between thin layer chromatography (TLC) and column chromatography (CC)? 2. Are CC and TLC operations conducted concurrently? Explain. 3. Name a few packing materials used in packing columns in Column Chromatography operations. 4. Explain the role of eluting solvent(s) in column chromatography procedures. 5. When performing column chromatography, which of the following compounds would you expect to elute first: Ferrocene of acetylferrocene? Explain why.
Thin layer chromatography is used for (select all that apply) 1. following the course of a reaction. 2. determining the number of compounds in a mixture. , helping to establish if two compounds have identical retention times under the same TLC conditions. 4. determining the melting point of a solid sample. determining the number and types of bonds present in a compound.
1. What is the purpose of Thin-Layer Chromatography (TLC)? 2. What are the phases involved in TLC? 3. What is coated on the TLC plate? 4. What is the purpose of lining the wall of the TLC chamber with paper? 5. Why is it important to use a small amount of the mobile phase? 6. Why should you remove the TLC plate before the mobile phase reaches the top? 7. What type of compounds are visible with UV light? 8....
2. An unknown compound was analyzed using thin layer chromatography, its constituted of two components (A and B) as shown in the TLC (Silica coated stationary phase; Chloroform and Ethyl acetate as mobile phase). The mixture was then loaded onto column with silica as the stationary phase and the same solvent system was used. (2 points) Column Chromatography TLC time A В Predict the order of elution of the compounds (A and B). which one would be eluted first/last and...
2. The diagram below shows the results of a simple thin layer chromatography experiment. height reached by the solvent the "solvent font a) Describe briefly, but precisely, what you would have done in order to get to this stage. You can assume that you have been given a suitable thin layer chromatography plate. b) Why is there a cover on the beaker? c) In order to help identify the things in a chromatogram, you can measure the Rf value for...
Thin layer chromatography (tlc)
Questions 1. List three factors that affect R¢ values in adsorption TLC. Explain. 2. Explain how to prepare sample solutions and capillary applicators. 3. Describe the basic principle underlying all chromatographic processes.
Question 19 1 pts Which technique would be best suited to separate a mixture of compounds that differ primarily by their boiling point, 110 °C versus 145 °C? infrared spectroscopy distillation O thin layer chromatography O reflux O liquid-liquid extraction
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