preparation of aspirin and oil of wintergreen | Introduction Organic compounds are those which contain carbon as well as a select other elements. An organic acid however‚ is an organic compound which contains acidic properties. An ester is an example of being a derivative of these organic acids. Esters can be prepared by the reaction of carboxylic acids and alcohols‚ with an inorganic acid used as a catalyst which is dubbed esterification. With o-hydrobenzoic acid‚ or salicylic
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known or accepted value. METHODOLOGY I. Materials 50-mL graduated cylinder 125-mL flask Electronic balance Block of wood Watch glass 25 centavos coin Tongs 10.00 mL pipet Pipet bulb Metric ruler Distilled water Liquid sample (Ethyl acetate) II. Procedure A. Density of Water 1. Weigh a clean dry graduated cylinder. 2. Add exactly 20 mL Distilled Water in the graduated cylinder. 3. Weigh the graduated cylinder with Distilled water. 4. Make sure that all the data are recorded
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significant effect on C=O strength hence low energy absorption. Preparation of- Manganese(III) tris(acetylacetonate) Abstract In this experiment Manganese (III) tris (acetylacetonate) - [MnIII(acac)3] is prepared using manganese chloride‚ sodium acetate and acetylacetone‚ further analysis were done to find the percentage of manganese in complex. Introduction Manganese is a first row transition metal that has a range of oxidation states that appear in its compounds. The most common oxidation states
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Eugene Posniewski English 10-1 Ms. Foley 22 January 2010 What is Pedophilia? Pedophilia is a paraphilia that involves an abnormal interest in children. A paraphilia is a disorder that is characterized by recurrent intense sexual urges and sexually arousing fantasies generally involving: nonhuman objects; the suffering of humiliation of oneself or one’s partner; or animals‚ children‚ or other nonconsenting persons. Pedophilia is also a psychosexual disorder in which the fantasy or actual
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b) 17.3 c) 12.2 d) 15.8 e) 7.0 3. The Ka of acetic acid is 1.8 x 10-5. What is its pKa? a) 1.8 x 10-5 b) 5.18 c) 4.74 d) -4.74 4. What is the pH of a 0.100 M solution of acetic acid? a) 1.34 x 10-3 b) 2.87 c) 1.00 d) 4.74 e) 3.74 5. What is the acetate ion (Ac- or CH3COO-) concentration of the solution in Problem #4? a) exactly zero b) 3.74 M c) 0.100 M d) 1.34 x 10-3 M e) 1.8 x 10-6 M 6. What is the percent ionization of the acetic acid in Problem #4? a) 1.34% b) 0.134% c) 0.0014% d) 1.8 x 10-5
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CH3COOH Assay of Aspirin capsules Aqueous Alkalimetry Residual titration 0.1N NaOH Phenolphthalein TS C6H4OCOCH3COOH + NaOH C6H4OCOCH3COONa+ H2O Assay of Metacholine Chloride Non Aqueous Acidimetry Blank titration Perchloric acid Mercuric acetate TS Crystal violet TS 2 Cl- + Hg (OAC)2 + 2HClO4 2 ClO4- + 2HOAc + 2HgCl2 Assay of Phenytoin Non Aqueous alkalimetry Blank titration Sodium methoxide Saturated sol’n of Azo violet in Benzene H C6H5 N--C=O
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Neroli essential oil is gotten from the flowers of the bitter orange tree‚ which belongs to the citrus family. Neroli oil is extracted through the distillation method. Neroli essential oil gibes off aroma that appears to be a blend of sultry floral with a touch of earthly wood. Bitter orange‚ which serves as the source of neroli essential oil is majorly grown in Eastern Africa‚ Western India and Himalayas. However‚ during the mid-1500s‚ the bitter orange tree was taken to St. Augustine‚ Florida by
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“Road salt” is a common term used for some chloride salts‚ including sodium chloride (NaCl)‚ which are used as de-icing agents on roads. The application of these de-icers on roads and other impervious surfaces in North America during winter months was in practice since the 1960s. The amount of snow fall is so high in these areas that snow and ice management becomes very essential to prevent road accidents‚ to maintain a continuous flow of traffic and to ensure safe pedestrian travel during winter
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39. The Viscosity of Liquids After studying the present lecture‚ you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity‚ one of the transport properties‚ arises because of intermolecular attractive and
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10 golden Rules for Glowing and Radiant skin Skin care is more beyond than just cleaning it and using various types of cosmetics products. You also need to be take a balanced healthy diet and have to get enough sleep every day. You stress level can damage a lot to your skin. If you are having unique skin‚ then you have to recognize it and take care for it. Let’s have a look for the various natural ways for your skin care The most common diets tips are below Eat Lots of Fruits and Vegetables
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