Homework Answers
Retention factor (Rf) can be known from the TLC using a suitable solvent mixture (example: hexane + ethyl acetate) as an eluent, by which it can be confirmed that which compound in the mixture will be eluted first from the column.
Hence, it is necessary to perform TLC before carrying out the column chromatography.
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6. Why is it necessary to perform a thin layer chromatography (TLC) before carrying out the...
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 6. When should a mixed-solvent system be used for TLC? Explain. 7. Is...
Thin layer chromatography
6. When should a mixed-solvent system be used for TLC? Explain. 7. Is the order of elution of the components the same for TLC as for column chro- matography? Explain bow.the various fractions can be analyzed from a gravity column.
1. What is the purpose of Thin-Layer Chromatography (TLC)? D
1. What is the purpose of Thin-Layer Chromatography (TLC)? D
List and describe the 4 steps of TLC (Thin-Layer Chromatography)
List and describe the 4 steps of TLC (Thin-Layer Chromatography)
Is it possible to use Thin Layer Chromatography (TLC) to analyze a distillation sample. For instance,...
Is it possible to use Thin Layer Chromatography (TLC) to analyze a distillation sample. For instance, if I completed a Simple Distillation and wanted to find the identity of the distillate, would it be possible to do this through TLC? Please explain fully why or why not.
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....
11. Why should you use pencil instead of pen when marking on a thin layer chromatography...
11. Why should you use pencil instead of pen when marking on a thin layer chromatography plate? a. Pencil lead isn't as dark. b. The components of pen ink will separate along with your sample, while pencil lead will not. c. Pen ink will not mark on a TLC plate. d. Pen ink will undergo a chemical reaction with the solvent. 12. Which of the following is not a reason to use thin-layer chromatography? a. To determine the number of...
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.
Why is thin layer chromatography used to determine the purity of a sample when you could...
Why is thin layer chromatography used to determine the purity of a sample when you could use an IR spectrum? How does TLC confirm the purity?
In thin-layer chromatography, dhy do polar compounds require polar eluents to move them on the TLC...
In thin-layer chromatography, dhy do polar compounds require polar eluents to move them on the TLC plate?
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
6. When should a mixed-solvent system be used for TLC? Explain. 7. Is the order of elution of the components the same for TLC as for column chro- matography? Explain bow.the various fractions can be analyzed from a gravity column.
1. What is the purpose of Thin-Layer Chromatography (TLC)? D
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....
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.
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