Extraction of Caffeine from Tea Leaves Jaybee Balilea‚ Sharmaine Baysic‚ and Maria Anjelette Patricia Belen 3BIO7‚ Department of Biology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Extraction is a technique for isolating and purifying organic substances. In this technique‚ a solution is combined thoroughly with a second solvent that is immiscible with the first solvent. The solute is extracted from one solvent into the other because it is more soluble in the second solvent
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Extraction Separation of a Carboxylic Acid‚ a Phenol‚ and a Neutral Substance Purpose The objective of the experiment is to identify the three substances in the mixture and to determine the percent recovery of each from the mixture. The unknown will consist of either benzoic acid or 2-chlorobenzoic acid‚ 4-t-butyl phenol. Determine the weight of crystals and also the percent yield Introduction There are various techniques of extractions‚ solid/liquid extraction‚ which
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Preparation of the NaOH Solution Mass of NaOH before standing = NaOH before standing (g) – beaker (g) = 111.490 g – 110.970 g = 0.520 g Mass of NaOH after standing = NaOH after standing (g) – beaker (g) = 111.500 g – 110.970 g = 0.530 g Standardization of the NaOH solution TRIAL I Volume of NaOH solution = Final reading of buret - Initial reading of buret = 13.80 mL – 0.00 mL = 13.80 mL Converting the Volume (mL) to Volume (L) Volume (liters) = Volume (mL) x
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Extraction of Eugenol from Cloves 02/01/2014 CHM2210L University of North Florida Abstract Eugenol is found in the essential oil of cloves and has distinct properties that make it an important product to both food and drug industries. (Bhimrao‚ et. al‚ 2004). To utilize many of eugenol’s characteristic properties‚ it is necessary to isolate this organic chemical from the other components of cloves. In this experiment‚ eugenol was isolated from a sample of cloves using a series of techniques
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Objective: To extract caffeine from tea powder using polar - nonpolar solvent extraction technique. Theory: The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea leaves
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Connor Sims‚ Associate SUBJECT: Oil Drilling & Gas Extraction Industry in the US Analysis (21111) This report presents information regarding the industry‚ the primary operator of oil and gas field properties. The industry fuels its key buyers‚ the Natural Gas Distribution (22121) and the Petroleum Refining (32411) industries‚ with crude oil and natural gas. The industry continuously battles a shortage of available oil. In addition‚ many major oil fields have been in use for decades‚ slowly
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granted. Many of us do not wash our hands the proper way‚ and many of us do not wash our hands as often as we should. II. Reason why hand washing is so important a.i. “80% of all infections are transmitted by human hands” (Fudin‚ 2011). a.ii. “Each year‚ 40 million Americans get sick from hand-borne bacteria‚ and 80‚000 of these people die” (“Tools help companies‚” 1997). a.ii.1. Washing your hands the right way does save lives III. Purpose statement – how to wash your hands‚ the right way
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Drain cleaner is mostly made up of the strong base NaOH but also has other substances in it to efficiently clean a lodged pipe such as aluminum‚ sodium nitrate‚ and sodium chloride. All the homeowner ahs to do while using drain cleaner is to pour I down the clogged drain and maybe run some water‚ inside the pipe the chemicals go to work for you. But even though it sounds simple precaution must be taken in order to prevent injury to our body. NaOH must be produced correctly before it can be used
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Executive Summary Cigol Bangladesh Ltd. is planning to launch a new product range named “Z Clean Hand wash” in a growing market. Though Lifebuoy Hand wash (A product of Unilever) is the current market leader‚ and there’s more competitors like Dettol Hand wash (Reckit Benkiser)‚ Savlon Hand washing Liquid (ACI) and Sepnol Hand wash (Square Toiletries ltd.)‚ we can compete because our hand washing products offer a distinctive blend of quality‚ features‚ benefits‚ service and value based pricing
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Discussion: Extraction and crystallization- The purpose of this lab was to extract and crystallize compounds in a mixture using acids and bases. 1 gram of the unknown was dissolved into 30 mL of ethyl acetate. The mixture was then transferred to a separatory funnel. Using aqueous solutions of different pH we were able to separate organic acids‚ bases and neutral compounds from each other. Using three 10 mL portions of HCl‚ we reacted the HCl with the base in solution. This made it possible to
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