PREPARATION OF TIN TETRAIODIDE 09/06/2012 Introduction The objective of this project was to prepare tin tetraiodide through the following reaction: Sn+2I2∆SnI4 and to measure the melting point of tin tetraiodide. Tin tetraiodide was recrystallized after the synthesis. The percent yield and the theoretical yield of tin tetraiodide were calculated. Recrystallization is to further improve the purity of tin tetraiodide. The solvent is carefully chosen to be toluene in order to maximize the recovery
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Experiment 2 Date: 24 January 2006 Title : Crystallization of a Crude Sample Objective : Preparation of pure diphenyl via crystallization of crude diphenyl dissolved in ethanol. Structural Formula of Organic Substances Involved : Diphenyl Ethanol Apparatus : Round-bottom flask (100 mL)‚ measuring cylinder (50 mL)‚ conical flask (50 mL)‚ filter flask‚ beaker (100 mL)‚ stemless glass funnel‚ Hirsch funnel‚ capillary tube‚ long glass tube‚ watch glass‚ glass vial‚ water condenser
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Experiment 3 : Preparation of Solutions and Buffers Objectives : 1. To study and understand the principle theory and formula of preparation of buffer and solution. 2. To learn the methods of buffer and solution preparation. 3. To focus on concentration units of molarity‚ percentage of concentration‚ and dilution of solution. Introduction : When a substance‚ called a solute‚ is dissolved in another substance‚ called the solvent‚ a solution is formed. A solution is known as a homogeneous
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and women under pressure to fit the image of perfection‚ yet when a person does achieve this so called perfection‚ others ridicule them for succumbing to peer pressure. In “The Unknown Citizen” by W. H. Auden‚ the speaker‚ a government bureaucrat‚ also takes on this two-faced attitude towards a man identified as the unknown citizen. At first glance‚ this poem seems like the well-deserved tribute to a man who lived the perfect life‚ but after a more detailed analysis‚ the speaker reveals his attitude
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The aromaticity of the compound is lost in this important step. Water‚ acting as the Lewis base‚ removes a proton from the carbon bonded to the nitro group‚ an aromatic benzyl structure is created again: nitroacetanilide; thus ending the nitration reaction (1). Next‚ an acid-catalyzed hydrolysis reaction occurs to remove the acyl group. The nitroacetanilide receives a proton from the sulfuric acid and the double bonded oxygen becomes positively charged. A sp3 hybridized carbon compound is formed
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Numerous treatment methods are constantly being discovered and developed to help start alcohol and drug abusers down the path of sobriety. There are many different methods available to help addicts who need help or to help addicts who want help. Our system is diverting from a punishing approach to a treatment approach. This paper will examine the most popular inpatient and outpatient options available throughout the nation. The types of addicts who normally file into these types of settings will
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Sustainable Food Preparation. Through out the world food preparation has become more damaging to the world. In London‚ food creates 19 million tones of greenhouse gas emissions per year which is more than from all of London’s transport and all of London’s houses. Sustainable food is safe‚ healthy and nutritious‚ for consumers in shops‚ restaurants‚ schools‚ and hospitals etc‚ and can meet the needs of the less well off people and provides a livable livelihood for farmers‚ processors and retailers
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Title: preparation of films for staining Objective: to produce a thin smear of bacteria adhering to a clean microscope slide as preparatory to staining. Procedure: A. From broth cultures 1. Inoculating loop was sterilized using Bunsen burner and let to be cool before use it to obtain bacterial suspension from the tube. 2. The bacterial then placed in the center of the clean microscope slide. It also speared to produce thin films. 3. The films are set to air dry before wafting the slide gently
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BN2710 Final Preparation Final Assessment: The final exam represents 35% of the final grade Format The exam will consist of short answer questions to be written in brief essay format. Students will have an option to pick which questions to answer. Sample questions were presented in class and are included on D2L. All questions will follow this format or will be similar to questions asked on the midterm. Major Topics To Study (By Class) Hammer 90 (Class 3) Definition of business process and rules
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Preparation of Potash Alum A PROJECT REPORT SUBMITTED TO CHEMISTRY DEPARTMENT DIST: AMRELI GUJARAT BY:-ANURAG AGARWAL ROLL NO: XII SCI. 2009-2010 PRINCIPAL INTERNALEXAMINER EXTERNAL EXAMINER CERTIFICATE Certificate This is to certify that this project work is submitted by ANURAG AGARWAL to the Chemistry department‚ Aditya Birla Public School‚ Kovaya was carried out by him under the guidance & supervision during academic year 2008-2009
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