The purpose of the first part of the experiment was to produce a chemical compound which was the alum crystals by using aluminum‚ potassium hydroxide and sulfuric acid. After the compound was present‚ the purpose of the second part of the experiment was to make sure that the compound that was formed in the first half of the experiment was actually alum. Some of the experimental techniques that were used in this experiment was filtration using the Büchner funnel vacuum filtration‚ recrystallization
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rocks Acetic Acid Looks like a clear liquid Solution of Sodium Thiosulfate Looks like a clear liquid Granular Zinc Looks like shredded pieces of silver Iodine Crystals Looks like small silver balls Zinc Ion and Iodine-Iodide-Triiodide ion in water Looks like a brown liquid Solid Zinc Iodide Looks like a white powder Mineral Oil Looks like a clear liquid Silver Nitrate Looks like a clear liquid Magnesium Turnings Looks like a small silver curved figure 3M Hydrochloric Acid (HCL) Solution
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Fatty acids and glycerol are the sub unit of most lipids. In the synthesis of a fat or oil three fatty acid molecules combine with one molecule of glycerol to form a triglyceride. Triglycerides make up about 95% of all dietary fats. This is formed by condensation (water is lost). Triglycerides are the chemical form in which most fat exists in food as well as in the body. They’re also present in blood plasma and‚ in association with cholesterol‚ form the plasma lipids. Fig 1.0 shows
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Vitamin C Introduction: The lab consists in determining the vitamin C concentration in a solution by a redox titration using iodine. Vitamin C (ascorbic acid) is a water-soluble‚ essential oxidant that plays a vital role in the protection of the body from infections and disease it is acquired from primary fruits and vegetables. With the use of different materials as natural orange juice‚ Tampico (chemical orange juice) and other solutions that contain vitamin C we will find the amount of vitamin
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to save time and cut some days out. We were able to do this by being given our own Salicylic acid (SA) prepared for us instead of having to used wintergreen to make it and recrystallize it. In addition‚ we skipped the qualitative test of our purity for SA and Aspirin (ASA). The first part of this experiment is the preparation of ASA from SA were‚ we prepared our aspirin from the collected salicylic acid. A screw-capped vial was weighed empty to 29.7416 grams and filled with SA. The mass recorded
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TABLET FRIABILITY METHOD 1. 10 tablets of mefenamic acid was selected and weighed. 2. All tablets was placed into the drum of the tablet abration and friability tester. The rate of rotation was set up at 25 rpm for 10 minutes. Then‚ operation was started. 3. At the end of the operation‚ all tablets was removed. The tablets was cleaned from dust using brush and reweighed again. The percentages loss of weight was determined. RESULT Initial weight of tablets = 5.8315g After operation =
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Ashley Spees CHM 261- Batzer Chem Final Write Up- Kool Aid Lab Total Acid This part of the lab requires titration of Kool Aid with an NaOH solution. The reason titrations are used is to determine the concentration of an unknown solution by reacting a strong acid with a strong base. Titrations are hard to accomplish‚ though‚ due to the fact that indicators used to show the endpoints are very sensitive and one drop could make the solution titrate past its endpoint. Blue stock solution: 3 mg/L
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reaction‚ the magnesium will dissolve in the hydrochloric acid to produce hydrogen gas. This is because magnesium is higher than hydrogen in the reactivity series. Therefore‚ when the two reactants are combined‚ a displacement reaction occus and the magnesium displaces the hydrogen‚ forming magnesium chloride and hydrogen gas. Mg (s) + 2HCl (aq) -> MgCl 2 (aq) + H 2 (g) Magnesium + Hydrochloric acid -> Magnesium Chloride + Hydrogen Aim The aim of this investigation
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CHM456 ORGANIC CHEMISTRY 1 LABORATORY Contact hours: 3 hours/week Laboratory textbook: Pavia‚ Lampman‚ Kriz and Engel‚ Introduction to Organic Laboratoy Techniques 3rd Edition (2011) ** Students MUST obtain a copy of the textbook Synopsis This is an organic chemistry practical course which reinforce the theory and concepts studied in Organic Chemistry 1 (CHM456). It covers the learning of simple laboratory techniques such as reflux‚ distillation‚ extraction‚ crystallization and melting point
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Investigating Stoichiometry with Carbonic Acid Salts Problem: Testing the actual yield versus the theoretical yield of NaCl when HCl is titrated into Na2CO3 and NaHCO3. When 0.15g of both NaHCO3 and Na2CO3 are titrated with HCl‚ then 0.165g of NaCl should form from the NaHCO3‚ and 0.104g of NaCl should form from the 0.15g of Na2CO3. Procedure: Weigh 2 samples of 0.15g of dried unknown each‚ and dissolve each into 50mL of distilled water. Add 0.5 to 1mL of bromocresol green indicator until the
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