The Role Catalysts In Chemical Reactions‚ Their Importance In Industry‚ Problems and New Developments OXFORD AND CAMBRIDGE SCHOOLS EXAMINATION BOARD. General Certificate Examination - Advanced Level Chemistry (Salters’) - Paper 3 mock. ROBERT TAYLOR U6JW. A Catalyst is a substance that alters the rate of a reaction. The catalyst remains unchanged at the end of the reaction. The process is called catalysis. In this report I aim going to explain the role of catalysts in chemical reactions and their
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Synthesis of Banana Flavor via Fischer Esterification Patricia Faye R. Agnila‚ Joan Karla M. Alvaran*‚ Micaela Isabel N. Arellano‚ and Denzel Nicho T. Armendares Department of Biological Science‚ College of Science‚ University of Santo Tomas‚ Manila‚ Philippines Abstract This experiment is conducted to exhibit the synthesis of banana
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Experiment no. 1: PHYTOCHEMICAL SCREENING INTRODUCTION Phytochemicals are define as the chemical compounds found or produced by the plants. The term is also define as the chemicals from the plant that may affect health [1]. This compounds are non-essential compounds which means that they are not required by the human body for sustaining life. There are more than thousand known phytochemicals. Some of the well-known phytochemicals are lycopene in tomatoes‚ isoflavones in soy and flavanoids in
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groups are generally less relative than Carbonyls that are directly bonded to alkyl substituents. In this experiment‚ we will perform each reaction on the known compounds that correspond to each chemical test first‚ to determine whether the reagents are working and to help you interpret a positive or a negative test. It is important that after the tests‚ the unknown sample will not be able to be unequivocally determined. Results: During this experiment‚ there were three different
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Grignard Synthesis of Triphenylmethanol Aim The aim of this experiment was to prepared Grignard reagent (phenylmagnesium bromide) from bromobenzene and magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction
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LAB PRACTICAL 2 * Skin * Comprised of all 4 main tissue types * Epithelial * Connective * Muscular * Nervous * Part of the integumentary system * Function: * Protection * Body temperature regulation * Vitamin D synthesis * Sensation to touch‚ pressure‚ pain and temperature * 2 main regions: * epidermis * 5 strata * corneum
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Crispin successfully allows the modern-day historian to delve into the medieval era and identify‚ firstly the detailed inner workings of an 11th century monastery. In addition to emphasising the continuity between what ‘St. Benedict’ rules and the way the monks lived. It is very difficult to fault Herluin on any of the ‘St. Benedictian rules’‚ but this maybe where the success of the text wavers‚ as for the modern reader it would be hard to support a man so perfect‚ claiming
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Experiment #10 & #11 The Synthesis of Cobalt Oxalate Hydrate The Synthesis of a Nitrite Complex February 5‚ 2012 Chemistry 1211L - 146 - Spring 2012 Procedure The Synthesis of Cobalt Oxalate Hydrate Place 100 ml of distilled water in a 250-ml (or 400-ml) beaker. Add 1.26g of oxalic acid dihydrate (H2C2O4.2H2O) and 1 ml of concentrated ammonia. Stir the mixture until the solid has dissolved completely. Dissolve 2.34 g of cobalt chloride hexahydrate (CoCl2.6H2O) in 100 ml of water
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reactions‚ and several reagents that catalyze the reaction according to the functional group it works on. For primary alcohols‚ several reagents can be used: • The Jones reagent (CrO3/H+‚ Cr2O72-/H+‚ H2CrO4)‚ • Potassium permanganate (KMnO4/-OH or H+)‚ • Collins reagent (CrO2/Pyridine “PCC” (no water present) Secondary alcohols use the same reagents as primary alcohols. Tertiary alcohols are resistant to oxidation. For the aldehydes‚ the Tollins reagent (Ag(NH3)2 is used in
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test‚ and interpret reactions in the oxidase test. Purpose is to determine if the bacterium has cytochrome c oxidase in its electron transport chain. Materials: 1 paper towel‚ loops‚ oxidase reagent dropper‚ E.coli‚ Pseudomonas Aeruginosa. Procedure: Take each organism on a loop and add the oxidase reagent to each loop. The area with
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