Essay Acid Base Extraction - 1511 Words

Acid Base Extraction The purpose of this laboratory assignment was two-fold, first, we were to demonstrate the extraction of acids and bases, finally, determining what unknowns were present. Second, we were to extract caffeine from tea. These two assignment will be documented in two separate entities. Introduction: Acid/base extraction involves carrying out simple acid/base reactions in order to separate strong organic acids, weak organic acids neutral organic compounds and basic organic substances. The procedure for this laboratory assignment are on the following pages. 3) Separation of Carboxylic Acid, a Phenol and a Neutral Substance nbsp;nbsp;nbsp;nbsp;nbsp;The purpose of this acid/base extraction is to separate a mixture of†¦show more content†¦Add additional 5ml of water to funnel, shake as before Add 15 ml NaCl to funnel. Shakenbsp;nbsp;nbsp;nbsp;nbsp;Bottom layer is white andnbsp;nbsp;nbsp;nbsp;nbsp;NaCl was added to the mixture and allow layers to separate gooey. wash the ether and draw off lower layer, which is layer and to remove discarded organic substances nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;NaOH and NaHCO3 Pour ether layer into 50ml Erlenmeyer flask from the top of the separatory funnel (not allowing any water droplets to be transferred) Flask 3 Add anhydrous NaSO4 to ether extractShow MoreRelatedAcid-Base Extraction: Benzoic Acid Two-Base Extraction1901 Words   |  8 PagesTWO-BASE EXTRACTION OF BENZOIC ACID, 2-NAPHTHOL, AND NAPHTHALENE FROM UNKNOWN SAMPLE # 131 Douglas G. Balmer (T.A. Mike Hall) Dr. Dailey Submitted 11 July 2007 Introduction: The purpose of this experiment was to separate a sample of benzoic acid, 2- naphthol, and naphthalene of unknown proportions using a two-base extraction method. The three components of the mixture will react differently to sodium bicarbonate and sodium hydroxide because each of the bases’ conjugate acids has a differentRead MoreThe Effect Of Acid Base Extraction On Organic Compounds982 Words   |  4 Pages Introduction Acid-base extraction is a very useful technique in organic chemistry. It is used to separate organic compounds from each other. The idea is that most of organic compounds will be more soluble in organic solvents than they are in water (1). The extraction, in its most basic form, will result in unequal distribution of solute between two immiscible (not forming one mixture when added together) solvents (2). Since both of the solvents are immiscible, two separate layersRead MoreThe Effect Of Ph Solution Of Feed Phase On The Removal Efficiency Of Citric Acid1526 Words   |  7 Pages Figure. 7. Effect of pH solution of feed phase on the removal efficiency of citric acid Transport conditions: Feed phase: citric acid 10-2 M, pH 2-12. Stripping phase: deionized water, pH=6.8. Membrane: 12.60 cm2 of surface area, Calix[4]resorcinarene (0.15 g/g mixture of polymers), 0.03 ml 2-NPOE/g mixture of polymers. Values obtained after 5 days of experimentation. 3.8 Stability of PIMs In this study, one PIM was reused, whereas the feed and strip phases were replaced after one cycleRead MoreSeparation of Acid, Base and Neutral Compounds from a Solid Mixture by Liquid-Liquid Extraction1558 Words   |  7 PagesExperiment #1: Separation of Acid, Base, and Neutral Compounds from a Solid Mixture by Liquid-Liquid Extraction Introduction Liquid-liquid extraction is a technique used to separate chemical substances in order to purify or identify the various components of a mixture. Flavors, spices, perfumes, and medicines are just some of the everyday things that are extracted from plants and other natural sources [1]. The basic principle used to carry out this separation is the mixing of two liquids that areRead MoreOrganic Chem Essay example934 Words   |  4 PagesOrganic Lab I No. 5-6 Separation of a Carboxylic Acid, a Phenol, and a Neutral Substance (Two-week lab) Reading Assignment 1) Chapter 7 †¢ Introduction: P. 135- first paragraph †¢ Theory and Techniques (p142-145) o Properties of Extraction Solvents o Mixing and Separating the Layers o Drying Agents o Part 1: The Technique of Neutral Liquid/Liquid Extraction The description is for dichloromethane-aqueousRead MoreOur Experiment to Separate a Mixture of Organic Compounds Essay1308 Words   |  6 Pagesaccomplish the task? What techniques were used to purify and identify the product(s) of the reaction? In this experiment, an acid-base extraction was done to separate a mixture of an unknown acid and fluorene, a neutral compound. The possible unknown acids were 2-chlorobenzoic acid, 3-chlorobenzoic acid, and 3-methylbenzoic acid. The purification of the isolated unknown acid was performed by recrystallization and its identity was established by analyzing the melting point range of the pure productRead MoreUsing The Solid Liquid And Liquid Extraction Techniques For Extract A Strong Acid1613 Words   |  7 Pages Extraction Aleigha Spaulding Joseph Osazee 10-6-15 Abstract: This report presents the percentage recoveries found when using the solid-liquid and liquid-liquid extraction techniques to extract a strong acid, weak acid, base, and neutral compound from a mixture. During the solid-liquid section of the experiment, 0.5 M NaHCO , 0.5 M NaOH, 0.5 M HCl, and distilled water are used to dissolve and separate the acid, phenol, and amine solutions from the mixture, leaving the neutralRead MoreMethods Of A Solvent System For Extraction1652 Words   |  7 PagesIntroduction Extraction is a technique that is commonly used to separate mixtures, despite whether the components are solids or liquids. One of the most well-known examples of extraction is the brewing of tea or the making of coffee. Every pot of coffee or cup of tea involves solid-liquid extraction. The soluble flavor and caffeine are extracted from the solid tea leaves or ground coffee beans into hot water (the solvent). Insoluble plant material is left behind in the tea bag or coffee filterRead MoreDetermination Of Solubility Of Polar Solutes1074 Words   |  5 Pages Introduction In the extraction of certain compounds, solubility plays an important factor in how the procedure is performed. The identification of which solvent is best for the substance is crucial. The relation of polarity between the solute and solvent is determined at a molecular level. The relationship between the solvent and solute needed shared similar characteristics. Polar solutes are dissolved in polar solvents while nonpolar solutes are dissolved in nonpolar solvents. From a chemicalRead MoreGenetic Engineering Of People : How Dna Is Located, Extracted And Amplified1055 Words   |  5 Pagesvery beginning of where life is formed. DNA, deoxyribonucleic acid, is the genetic finger print that is found in every living organism. The initial discovery of DNA was first identified in the late 1860’s by a Swiss Chemist named Friedrich Miescher (Pray, 2008). However, close to one hundred years later, American biologist James Watson and English physicist Francis Crick discovered that D NA molecules exist (Pray, 2008). DNA extraction from human cells begins when they are located in the sperm of