Fluorenone is more polar (ketone), has lower Rf value than
fluorene (alkene/aromatic) Therefore ,fluorene have a higher Rf
value .
Will fluorene or fluorenone have a higher Rf value? Support your answer. (2 pts)
Fluorenone can be synthesized from fluorene by reaction with NaOH in the presence of oxygen and a catalyst. The first step of the reaction is deprotonation of fluorenone. CH bonds normally have a pK_a in the 50+, but the pK_a of fluorenone is estimated to be 22-23 in dimethylsulfoxide. a) Which hydrogen of fluorenone is deprotonated by NaOH? b) Why is fluorenone so easy to deprotonate compared to a "normal" CH bond. Justify your answer appropriately.
Answer both please Why does fluorenone travel more slowly than fluorene? Why does acetone speed up the rate at which fluorenone travels? (Make sure to include a picture of your TCL plate in your lab report)
2. The fluorene fluorenone reaction occurs in two immiscible liquid layers. Identity w solvent layer in a separatory funnel each compound will be the most soluble by putting Aqueous or (O) Organic under each compound below. 3 pts NaOH HCI AO - describe how you assigned compounds to the aqueous and organic layers above. 2pts
In normal phase TLC, will benzoic acid or acetophenone have a higher Rf value? Please explain why your chosen compound has the highest Rf.
1. a) Why does biphenyl have a higher Rf value than either benzophenone or triphenylmethanol? Explain based on the structures and their effect on mobility in the TLC process. b) Which compound, benzophenone or triphenylmethanol has a higher Rf value? Explain, based on their structures, how you can predict this. c) You developed your TLC using a 10% mixture of diethyl ether in petroleum ether. Petroleum ether is a mixture of non-polar alkanes, so this TLC solvent is composed of...
Which compound would have the higher Rf value- Cholesterol or Cholesterol Stearate? Explain why (TLC analysis, Polarity, etc).
Hi can someone help me with question 2? It deals with Rf values and the collected data is given below! Results: Rf Values Of Compounds In Solvents Solvents 100% 50% hexanes 75% hexanes 25% ethyl 100% ethyl Hexane 25% hexanes 75% ethyl acetate 50% ethyl Compounds acetate acetate acetate trans-Stilbene 0.125 0.419 0.781 0.594 0.906 9-Fluorenone 0.156 0.677 0.906 0.375 0.843 Benzoic Acid 0.094 0.742 0.813 0.656 0.937 #2.) For each of the solvents used, rank the compounds (trans-stilbene, 9-fluorenone,...
Which compound is likely to have the highest Rf value on silica gel TLC? Group of answer choices A) Benzoic Acid B) Dimethylaniline C) Benzophenone D) They will all have the same Rf value.
In chromotagraphy separation of photosynthetic pigments, is it possible for have an Rf value greater than 1? = Rf value Distance moved by pigment / Distance moved by solvent yes no
Choose a value for Rf so that the gain of the amplifier is -1.7 Answer in ko. Rin = 18.4 KO Vs+ = 5,6 V Vs- = -5.3 V w Rf Vs+ Vin Vout Rin Vs.