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- Pinacl-Pinacole lab What visual criterion is to be used to assess whether the crude reaction product is dry prior to semimicro distillation?What is the purpose of washing the crude product with petroleum ether before filtration?Recrystallized 2-naphthol compared to literature values • Format the table and the descriptive paragraphs. Full comparisons of peaks are to be made with reference to the SDBS database for all three compounds.
- Give an observation and inference hexane is subjected into lucas test and Metallic sodium testWhich solvent is appropriate to use in the iodoform test? Select one: Dioxane Acetaldehyde Acetone Complete explaination neededGive a clear explanation answer Given A naphthalene sample is contaminated with a small amount of sodium chloride. Comment on each solvent: toluene, chloroform, and water, which is the best solvent for recrystallization for purifying the sample?
- referring to the NIST website, would you recommend simple fraction distillation to separate a mixture of cyclohexane and toluene? Eplain your selectionCompound A is impure and has a melting point of 90°C - 98°C. After purification, A will most likely have a melting point of: *Propose a extraction flowchart capable of seperating this mixture into its pure form
- In which case you would used a mic solvent recrystallization? Explain, give an exampleWhich of the following should be done if there is no recrystallization due to the unsaturation of the solution? (mixed solvent recrystallization) a. Crystal seeding b. Scratching the inner walls or bottom of container c. Further boiling of solvent d. Adding small amount of sampleWhat is/are the limiting reagent(s) for this three-step procedure? Why is sodium borohydride not the limiting reagent even though a smaller number of moles of this reagent are used? Mass/volume used in experiment: O-vanillin = 0.760g P-toluidine = 0.535g Ethanol = 15 ml Sodium borohydride = 0.1 g Glacial acetic acid = 2 ml Acetic anhydride = 2 ml