Formal Lab Report 1 Chemistry 100-03 March 19‚ 2012 Abstract: • Introduction/Objective: Prepare and analyze aspirin from salicylic acid and acetic anhydride‚ and calculate the percent yield of the synthesized aspirin. • Materials and Methods: This experiment called for the synthesis of acetylsalicylic acid‚ or aspirin‚ by using salicylic acid‚ acetic anhydride‚ sulfuric acid‚ and vacuum filtration. The salicylic acid and the acetic anhydride were mixed in a flask. Sulfuric
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flask. However‚ since the boiling point of 1-bromobutane is 101°C and the boiling point of water is 100°C it would be expected that there would be a large amount of water that will distill out of the flask along with 1-bromobutane. Other remaining reactants such as a small amount of alcohol and/or acid may be distilled out along with the water of 1-bromobutane. Since there is such a high probability of other components in the distillate‚ separation processes will need to be carried out. Water is
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Lab 1: Synthesis of Aspirin Introduction: The purpose of this lab was to demonstrate the ability to easily alter the molecular structure of a compound to greatly increase its utility. In this case‚ an acetyl group was added to salicylic acid‚ a naturally occurring compound with significant pharmaceutical value. Without the addition of the acetyl group‚ salicylic acid is an irritant to the gastro-intestinal (GI) tract. Once the acetyl group is added via a simple reaction‚ acetylsalicylic
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Make sure you can explain the Law of Limiting Factors. What is the difference between the optimum conditions‚ the zones of tolerance and the zones of stress? Can life exist outside of the zones of tolerance? Outside of the zones of stress? Be able to list the primary atoms in organic compounds. What is the difference between a producer and a consumer? Be able to classify life as one or the other. Make sure you know the products and reactants for photosynthesis and cellular respiration
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Final Exam Review Chapter 2 Study Questions 1. Define the following a) element b) compound c) pure substance 2. Classify each of the following as a pure substance or a mixture. For each pure substance‚ indicate whether it is an element or a compound. Which of the mixtures are solutions a) air b) titanium c) oak d) baking soda e) oxygen f) 7-Up g) wine h) carbon monoxide 3. Label each of the following drawings as element‚ compound‚ or mixture (Assume each type of circle
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a byproduct of the reaction. In Part C the benzyl was combined first with potassium hydroxide to make the carboxylate salt intermediate and second with hydrochloric acid to from the benzylic acid. For both reactions the organic compound was the limiting reagent‚ so one mole of product is expected for each mole of organic reagent. Crystallization was performed in both parts in order to eliminate any impurities in the product. The identities of the products were tested using IR and melting points
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Chemistry research task Slow combustion: Slow combustion occurs when a substance burns over a longer period without any external heat. The fuel is exposed to air and creates slow reaction occurs between the particles in the fuel and oxygen which is in the air‚ producing no heat or light. Even though it burns slowly without external heat‚ the burning speed is different with every resource due to limited amount of oxygen reaching the combustible substance‚ hence smaller the surface area lowers
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Ice Calorimeter Determination with Mg June 18th 2013 Abstract: This experiment determines the amount of energy needed to melt ice. A spontaneous increase in enthalpy produce by combining 0.2036g Mg and 5.00mL H₂SO₄‚ ice was melted and readings were taken by using an ice calorimeter. Readings were taken before during and after the reaction were completed. The data taken shows a value of -405 KJ/mol while the theoretical value was -483.7 KJ/mol. Calculating the experimental
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Intro 14/06/13 Natural resources are converted into useful products. Bulk chemicals produced on a large scale b/c there is a larger demand for them. Fine chemical are produced on a smaller scale. They’re used as feedstock’s (reactants bought by other manufacturers). How to achieve a greener industry Renewable sources Fewer use of hazardous chemicals Increased energy efficiency Reduce waste + pollution Higher yield The work of the chemical industry 1A Jobs Maintenance
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MA‚ PAULINE Date Performed: 10 SEPTEMBER 2014 NACIONGAYO‚ DANIELLE Date Submitted: 17 SEPTEMBER 2014 TEDERA‚ YVES HEAT EFFECTS AND CALORIMETRY Experiment No. 2 I. RESULTS A. Determination of Heat Capacity In this experiment‚ an improvised calorimeter was used to determine the heat capacity. The calorimeter weighed 4.47 grams prior to the addition of water. Tap water‚ 40 mL to be exact‚ was added to the calorimeter which increased the weight to 43.87 grams. The water was measured using
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