1. a compound has an Rf value of 0.97 diethyl ether but an Rf value of 0.045 in cyclohexane. Suggest a couple (at least three) solvent (solvents), or solvent system (systems), that might be better suited for this particular compound. 2. suppose your TLC plate shows only one spot at an Rf value of 0.015 (essentially it does not move). Does this mean that your sample is 100% pure? Explain your answer. 3. suppose your TLC plate shows only one spot at an Rf value of 0.98 (essentially with the solvent front). Does this mean that your sample is 100% pure? Explain your answer.
1. a compound has an Rf value of 0.97 diethyl ether but an Rf value of 0.045 in cyclohexane. Suggest a couple (at least three) solvent (solvents), or solvent system (systems), that might be better suited for this particular compound. 2. suppose your TLC plate shows only one spot at an Rf value of 0.015 (essentially it does not move). Does this mean that your sample is 100% pure? Explain your answer. 3. suppose your TLC plate shows only one spot at an Rf value of 0.98 (essentially with the solvent front). Does this mean that your sample is 100% pure? Explain your answer.
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL3: Carbon (13c) Nmr Spectroscopy
Section: Chapter Questions
Problem 13CTQ
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1. a compound has an Rf value of 0.97 diethyl ether but an Rf value of 0.045 in cyclohexane. Suggest a couple (at least three) solvent (solvents), or solvent system (systems), that might be better suited for this particular compound.
2. suppose your TLC plate shows only one spot at an Rf value of 0.015 (essentially it does not move). Does this mean that your sample is 100% pure? Explain your answer.
3. suppose your TLC plate shows only one spot at an Rf value of 0.98 (essentially with the solvent front). Does this mean that your sample is 100% pure? Explain your answer.
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