the solid in 2 immiscible solvents‚ diethyl ether and sodium bicarbonate or sodium hydroxide. II. Significance a. The significance of the Extraction lab is to purify Acetanilide benzoic acid‚ 2-naphthol‚ and naphthalene by determining the partition coefficient. This value is determined by dividing the solubility of the given solute in the extraction solvent (Sodium bicarbonate or Sodium hydroxide)) by the solubility in the original solvent (Diethyl ether). III. Theory a. New Techniques a
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Contents PART XV ANALYTICAL CHEMISTRY Chapter 63 Detecting the presence of chemical species Action of heating solid sample strongly 1 Chapter 64 Separation and purification methods Centrifugation Sublimation Partition equilibrium of a solute between two immiscible solvents Two-dimensional thin-layer chromatography 2 2 3 6 Chapter 65 Quantitative methods of analysis Detection of end point in acid-alkali titration 8 Chapter 66 Instrumental analytical methods More
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A. Title – Acid-Base Extraction with Separatory Funnel B. Introduction – The main objective of the experiment was the extract an acid‚ a base‚ and a neutral compound from a 2:1:1 compound of benzoic acid‚ p-nitroaniline‚ and azobenzene. In theory‚ an extraction technique based on phase distribution should allow two immiscible solvents to separate with a portion of the solute distributed into each. Using a separatory funnel‚ acids were extracted with bases (NaOH)‚ and bases were extracted
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we first classify organic compounds of known functional group using the said test. Butyl bromide‚ ethanol sucrose‚ butyraldehyde‚ ethanoic acid‚ methyl amine‚ nitrophenol‚ diethyl ether‚ benzoic acid and propanone were used. It is found out that they are class X‚ Sn‚ S‚ N‚ Sa‚ Sb‚ S‚ N‚ A1 and Sn‚ respectively. We use water‚ ether‚ HCl‚ NaOH‚ NaHCO3‚ H2SO4‚ litmus paper‚ and phenolphthalein in classifying each compound based on their solubility and color change. It follows a certain scheme on testing
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Synthesis of Cyclohexanol Author: Ahmed Ayyash 06/06/13 Introduction: In this experiment‚ cyclohexanol was prepared from an initial cyclohexene. However‚ this occurred over a number of steps‚ these are out lined below. 1. Cyclohexene + aqueous acid cyclohexyl cation 2. cyclohexyl cation + hydrogen sulphate + water protonated cyclohexanol + cyclohexyl hydrogen sulphate 3. cyclohexyl hydrogen sulphate protonated cyclohexanol + HSO4 4. protonated cyclohexanol + HSO4
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mixture into a solvent of the same polarity (Padias 128-37)‚ leaving behind the compounds that are un-soluble. The method is started by placing a mixture of solid compounds into a container and adding either a liquid non-polar solvent‚ such as diethyl ether‚ or a liquid polar solvent‚ such as acetic acid‚ to dissolve solutes of the solid mixture. Because “like dissolves in like‚” the desired solute is dissolved into the solvent and the undesired solute is left in the solid phase. Through use of vacuum
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the following questions and submit before beginning the experiment. 1. Which layer will be the aqueous layer when using dichloromethane (methylene chloride) as the solvent (i.e.‚ top or bottom)? Which layer will be the aqueous layer when using ether as the solvent? 2. When everything has been separated in Part D‚ which compounds will be in test tubes 1‚ 2‚ and 3? 3. The partition coefficient of benzoic acid is 3 in dicholormethane (methylene chloride) with respect
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INTRODUCTION Isopentyl acetate‚ "banana oil"‚ is a naturally occurring compound that possesses a distinctive odor. It is found in bananas‚ as well as many other organisms. This experiment attempts to produce isopentyl acetate by heating under reflux‚ which involves heating the mixture in a flask with a condenser placed vertically in the neck since any escaping vapours condense and run back into the flask‚ by combining isopentyl alcohol with acetic acid and an acid catalyst. The product was isolated
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was on the surface of the turnings. The turnings were added to the round bottom flask as well as an iodine crystal‚ which facilitates the reaction by cleaning the surface of the magnesium metal. Bromobenzene and anhydrous diethyl ether were then added to the flask. Anhydrous ether was used because at this point‚ no water was to enter the reaction. The reaction was triggered by swirling and the heat of a human hand. From here‚ the refluxing began and ended once the bromobenzene addition was completed
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an acid-base extraction. The unknown compound will then be purified by recrystallization and identified by melting points. Experimental Discussion The solubility of the basic component was manipulated to show that the basic compound was ether insoluble and water soluble. The extraction experiment with HCl shows that the impurity in the mixture was basic; therefore the basic compound must have been 4-chloroaniline.This was determined because once the aqueous layer was drained into the test
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