effort has thus been concentrated to search for an economically viable‚ practical (single stage‚ without high amount of recycle) process avoiding use of nitric acid. Recently‚ direct oxidation of cyclohexene to adipic acid with 30% hydrogen peroxide (H2O2) over Na2WO2 and [CH3(n-C8H17)3N]HSO4 as a phase-transfer catalyst (PTC) has been reported (see Figure
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Chemistry Lab Report (Design) Factors affecting Rates of a Reaction (Kinetics) KINETICS DESIGN LAB Research Question: Does the concentration of Potassium Iodide (KI) affect the rate of its reaction with hydrogen peroxide (H2O2) (of a fixed concentration)? Introduction: There are several factors that affect the rate of a reaction. Some of them being Pressure (if the reactants are Gases)‚ Temperature‚ Presence of a Catalyst‚ Surface Area of the reactant‚ and Concentration. According to
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Iodine is an element that is critical for normal function of the thyroid gland‚ which is a key regulator of the body’s basic metabolic rate. Iodine is a micronutrient‚ meaning we require only small amounts of it. For example‚ adults need about 150 micrograms of iodine in the form of iodide ion per day. However‚ an insufficient supply of iodide via diet and drinking water causes the non-cancerous enlargement of the thyroid gland known as goiter. Prolonged lack of iodide can lead to loss of thyroid
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V. HAZADOUS WASTE TREATMENT PROCESS Presently‚ the hazardous waste treatment technologies are highly developed from the decade before due to the more environmental and ecosystem concerning. Moreover‚ hazardous waste not threaten only environment but also to human hygiene and health. However‚ one of the most dangerous hazardous waste is dichlorodiphenyltrichloroethane (DDT). Addition‚ DDT is used as a majority pesticide during agriculture revolution period‚ and also uses to regulate Malaria in developing
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parts of the Cyclohexanol Cycle. The cyclohexanol was first converted to cyclohexene and water by simple distillation (product: 6.5395g‚ 79.75% recovery). The cyclohexene then underwent a bromination reaction by addition of concentrated HBr and a 30% H2O2 solution‚ followed by an extraction of the aqueous phase. This produced trans-1‚2-dibromocyclohexane (product: 12.8886g‚ 67.34% recovery). The trans-1‚2-dibromocyclohexane was reduced by zinc metal to cyclohexene. The reaction was conducted in water
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hydrogen gas in each test tube. 2.1.2. We mixed 3mL of 0.02 M KMnO4 and 2mL of 3 M H2SO4 in a test tube and stirred using a glass rod. Next‚ we divided the solution into two. We added 2mL of 0.03 M Na2C2O4 solution to the first half and 2 ml of H2O2 to the second and compared the rates at which the violet color of KMnO4 in the two test tubes disappeared. 2.2. Concentration 2.2.1. We placed into three separate test tubes 3mL of 12 M‚ 6 M‚ and 3 M of HCl each. Then‚ we placed Mg ribbons 1cm
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Elephant’s Toothpaste Mix two solutions together and you get an amazing eruption of foam. (Submit Review) Mix two solutions together and you get an amazing eruption of oxygen-filled foam that looks like a giant stream of toothpaste... or elephant toothpaste. The classic reaction is a favorite of chemistry teachers who have access to these chemicals that you will not find around the house. This explanation is offered for information purposes only. * Email * * Steve Spangler recently
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terminal electron acceptor. The superoxide ion‚ which is extremely reactive‚ is converted to H2O2 by the enzyme superoxide dismutase following the equation 2O2- + 2H+ → H2O2 + O2. Catalase must then break down H2O2‚ which is also a reactive oxygen species‚ according to the equation 2H2O2 → 2H2O + O2. All enteric bacteria in this experiment tested positive for catalase activity‚ showing bubbling when added to H2O2‚ indicating that O2 (and water) were being released. Although enteric bacteria use oxygen
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hydrogen peroxide. Results 3% created the most amount of bubbles‚ 6% creating the second most and 1.5% creating the least. Discussion 1. Which solution of H202 had the fastest rate of bubble production and which one had the slowest rate. 6% of H2O2 was meant to be the fastest and 1.5% the slowest. 2. What gas was released? Oxygen 3. Why did you ground the potato with mortar & pestle? To increase the surface area/volume ration. The potato was ground as catalase is an intracellular enzyme
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Chemistry S-20 Week 1 Alkenes: Isomers and Nomenclature 1. There are 6 unique alkene isomers of the hydrocarbon C5H10. Draw each of these isomers‚ and provide a systematic name for each. 1-pentene (E)-2-pentene (Z)-2-pentene 2-methyl-1-butene 2-methyl-2-butene 3-methyl-1-butene 2. For the three alkenes above which are various isomers of pentene‚ rank them in order of stability. Explain your ranking. most stable (more subst. double bond) less stable (cis alkene is
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