to predict whether the reagents would cause an SN1 mechanism‚ SN2 mechanism‚ or both. When predicting the outcome of SN1 and SN2 reactions‚ the nature of the carbon skeleton‚ nature of the solvent‚ and the nature of the leaving group are all taken into account. The experiment called for a two part reaction‚ sodium iodide in acetone (SN2) and silver nitrate in ethanol (SN1). A series of 8 test tubes were each filled with a different substrate to be tested by these two reagents. Approximately 4 drops
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Exam: 050175RR - THE READING AND WRITING PROCESS Leila says that a thesis statement is like a promise to a reader. Lucas says a thesis statement expresses the writer’s point of view. Who is correct? A. Only Leila is correct. B. Neither Leila nor Lucas is correct. C. Only Lucas is correct. D. Both Leila and Lucas are correct. 11. To narrow a general topic you’ve selected‚ which pair of techniques is most likely to be effective? A. Questioning and choosing an issue that interests you B. Using
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Specimen *Insert procedure here* Reagents are serological purposes are purchased as pre-packed kits. The antigen suspension is in a dropper bottle that delivers a requisive quality. The kit also contains buffer and other accessories required for performing the test. Saline (85% NaCl w/ deinonized water) is the only reagent prepared by the laboratory. Serological tests are done in two ways Slide method-Requires plate w/circles(wells) where the reagent in mixed Agglutination of flocculation
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team searched for the presence of starch‚ glucose‚ lipids‚ and proteins through the use of indicators: Sudan III‚ Lugol’s iodine‚ Benedict’s solution‚ and Biuret’s reagent. After testing the gelatin solution in the presence of the indicators‚ the results showed that Lugol’s reacted‚ turning orange-pink (oils) and the Biuret reagent (protein) reacted with the gelatin solution‚ turning lilac. Thus it was determined that the gelatin solution held both proteins as well as oils. Introduction: Lipids
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the rest retain the purplish color of KMnO4. On the other hand‚ the five compounds in Bromine test with light reacted positively. In Bromine test dark‚ Hexane and Unknown hydrocarbon 1 did not react because light (UV) is absent. Lastly‚ in Tollen’s reagent‚ only Acetylene reacted positively and all the other compounds gave a negative result since they are all hydrocarbons. INTRODUCTION Hydrocarbons are simple organic compounds with a distinct character of having Carbon and Hydrogen atoms only
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The Synthesis of Organic Aspirin ABSTRACT: The purpose of this experiment was to find out how a reaction undergoes for a globally known painkiller called aspirin‚ and to become familiar with achieving successful yields. Aspirin is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid to form a crude solid. Filtration is used separate the impurities from the crude aspirin. To get purified aspirin‚ the precipitate was heated until all
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PUSAT PENGAJIAN TEKNOLOGI INDUSTRI IMG 103/3 FOOD CHEMISTRY LAB REPORT Experiment 3 : Qualitative Test for Carbohydrate Date of Experiment: 27/03/2013 Date of Submission: 17/04/2013 Submitted by: Name: Te Hui Min Matric No.: 115615 Group: 4 Title Qualitative test for carbohydrate Introduction Carbohydrates are essential in foods as an energy source (starch is the main source of human calories)‚ a flavouring (simple sugars are usually sweet) and as a functional
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test for proteins‚ one must use biuret reagent. “Biuret regent contains solutions of sodium or potassium and a small amount of dilute copper sulfate solution” pg 28. The reagent then changes color to see if there is a sign of proteins. I think that the distilled water will show a negative result‚ Albumin will show a positive result‚ Pepsin will show a positive result and starch will show a negative result. For this experiment a person would need biuret reagent‚ four test tubes‚ distilled water‚ Albumin
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Experiment 15 & 16: Preparation of 1-bromobutane‚ an SN2 reaction Preparation of 2-chloro-2-methylbutane‚ an SN1 reaction Introduction The purpose of this experiment is to synthesize 1-bromobutane from 1-butanol and sodium bromide. In order for this reaction to reach completion there are four major operations that need to be performed. The four major operations include refluxing‚ simple distillation‚ separation‚ and drying. To begin‚ in order for the compounds to react they will be dissolved
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)6 )7 ) i )ii ) iii )8 )9 )10 )i ) ii )iii)11 ) | A reagent is highly serves as a reference material in all volumetric & mass titrimetric method.A reagent solution of accurately known concentration. * End point-point at which the reaction is observed to be complete and there is permenant colour change at the end of titration. * Equivalent point-point at which an equivalent amount of titrant is added to analyte. * Titrant-the reagent which is place in the burette & will added to analyte
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