You are given an impure sample of fluorene. Your crystallization solvent choices are water, methyl alcohol and toluene. Using your understanding of polarity and solubility, predict which solvent would be the best choice for crystallization. Briefly explain your answer choice and why the other two choices were eliminated.
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- The disinfection of drinking water to control microbial contaminants can form chemical disinfection byproducts. These compounds result from the reaction of chlorine with naturally occurring organic matter (the dissolved molecules that give natural water the yellow-greenish color). One class of disinfection byproducts is the malodorous and unpalatable chlorophenols. 2,4-dichlorophenol is one compound of this class. a) Calculate the vapor pressure p*L of 2,4-dichlorophenol at 60 °C using Tb and structural information only OH .CI M, = 163.0 g/mol Tm = 43.7 °C Tp = 213.0°C %3D %3D %3D1.) Assign a polarity to the following molecules and identify appropriate polarities of recrystallizing solvent for each. OH NH,From the difference in structures, explain why one component in your mixture has a higher boiling point in a distillation (toulene and 2-propanol)
- When 1.78 g of a certain molecular compound X are dissolved in 85. g of dibenzyl ether ((C,H;CH,),0), the freezing point of the solution is measured to be 0.9 °C. Calculate the molar mass of x. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. 미1-propanol, 2-propanol, and 1-butanol all have boiling too close together to be separated using the simple distillation column. What equipment be used to separate a mixture of these three?Explain briefly the basic principle of Baeyer's Test and Jones Test for alcohols.
- Justify the solubility of the samples in the corresponding solvent based on their structure. Sample water 5% NaHCO3 5% HCl 5%NaOH Conc. H2SO4 ether Aniline n-butyl amine Acetic acid Phenol cyclohexanol 2-Propanol Benzoic acid bromobenzene Ethylene glycol4. CH₂ -NH, Circle the pairs of organic solids which can be separated from each other by solvent extraction using 2M HCI.* CH₂ CH H.C-C-CH-C-CH CH CH H3C- H.C acid + acid → no reaction base + base → no reaction CH₂ -CH₂ -COOH -COOH CH HC-С-СООН CH₂ сну CH H₂C-C-COOH CH -COOH H.C. H.C- b09) 0) YBW 2 CH₂ ht of -сҢ CH3 H.C-С-соон сна ондул -NH₂ 75 0 986 CH CH -COOH -NH₂Describe the solubility, density and physical properties of Hexane, Cyclohexane and Toluene.
- You have a mixture of an aryl halide and a carboxylic acid that you wish to separate (both are solids). Both are soluble in diethyl ether. Explain ALL the steps you would take to obtain the two compounds in pure form from your sample.The substance to be analyzed – is white, highly soluble in water salt. Flame coloration test gives weakly-violet color. Interaction with concentrated sulfuric acid leads to evolving of reddish-brown gas with pungent odour. Mixing of salt water solution with chlorine water in presence of trichloromethane changes of color of organic layer to orange. What kind of substance is this? KBr СаCl SrCl, KNO2You have a mixture of an aryl halide and a carboxylic acid that you wish to separate(both are solids). Both are soluble in diethyl ether. Explain ALL the steps you would take to obtain the two compounds in pure form from your sample.