Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
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Objective: The benefit of this lab was to acquaint oneself with the fundamentals of the Aldol Condensation reaction by demonstrating the synthesis of dibenzalacetone (trans‚ trans-1‚5-Diphenyl-1‚4-pentadien-3-one) through the aldol condensation of acetone with benzaldehyde. The synthesis began by using a strong base to generate the acetone enolate ion. The ketone/enol tautomerization is an equilibrium process that produces little of the enol (ppm or less). However‚ any enol that formed quickly reacted
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Synthesis of Methyl Stearate The purpose of this lab was the convert liquid methyl oleate to solid methyl stearate by catalytic hydrogenation. Firstly‚ we produced hydrogen gas using solid mossy zinc and sulfuric acid. Using the hydrogen produced in the previous reaction‚ we were able to convert the liquid methyl oleate to solid crystals of methyl stearate. A mineral oil was also used to bubbler was used to maintain the hydrogen pressure slightly above the atmospheric pressure and to prevent back-diffusion
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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Abstract: The purpose of this lab was to synthesize triphenylmethanol from benzophenone and bromobenzene by the formation of a Grignard compound with the reagents bromobenzene and magnesium metal. The bromobenzene was first transformed into the Grignard compound and was then reacted with the benzophenone to make the final product. The mixture was then mixed with sulfuric acid and the organic layer was extracted via a separatory funnel. The mixture was then recrystallized from methanol and was allowed
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2. Experimental 2.1. Experimental procedure for the synthesis of bone-like CS-PEG-HA-ZrO2 nanocomposites (BNC I-III). At first‚ ZrO2 nanoparticles (NPs) were synthesized by using the previously reported method [16]. Briefly‚ aqueous solution of sodium hydroxide (purchased from HiMedia Private Ltd.) (40 ml 0.05M) was slowly added in zirconium oxychloride octahydrate (purchased from Merck India Ltd.) solution (100 ml 0.01M) prepared in methanol-water (1:1) at 5 oC temperature. The mixture was stirred
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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CHEM 3125 Experiment 4: Multistep synthesis of tetraphenylcyclopentadienone Overall Synthesis: CHEMICALS: wk 1: thiamine hydrochloride (1 g/student)‚ 95% ethanol (8 mls/ student)‚ 2M NaOH (5 mls/student)‚ benzaldehyde (4 mls/student) wk 2: 95% ethanol (30 mls/student) wk 3: acetic acid (6 mls/student)‚ ammonium nitrate (1 g/student)‚ 0.1g/ml cupric acetate (1.5 mls/student)‚ dichloromethane (6 mls/ student)‚ 30% acetone in heptanes (3 mls/student)‚ 95% ethanol (20 mls/student) wk 4:
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4/27/11 SYNTHESIS AND CHEMILUMINESCENCE OF LUMINOL Abstract: Chemiluminescence occurs in nature and can be found in everyday products. For example‚ the light omitted by fireflies‚ deep sea fish and glow sticks is a result of this process. Luminol was synthesized from from 3-nitrophthalic acid and then combined with potassium ferricyanide and hydrogen peroxide to omit a blue light. The product of this reaction is very unstable and is made by losing a nitrogen and the electrons go from an excited
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Objective To synthesis methyl orange by coupling diazotised sulphanilic acid with N‚N-dimethylaniline. Materials (Chemicals) Sulfanilic acid‚ 2.5% aqueous sodium carbonate solution‚ sodium nitrite‚ concentrated hydrochloric acid‚ N‚N-dimethylaniline‚ glacial acetic acid‚ 10% aqueous sodium hydroxide‚ saturated sodium chloride solution Apparatus 50 mL Erlemeyer flask‚ 250 mL beaker‚ test tube‚ hot plate‚ Buchner funnels Procedure In a 50 mL Elermenyer flask 1.2 g of sulfanilic acid and
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