H acid alcohol ester water Here R1 and R 2 represent groups such as CH3 - or CH3 CH2 -. The reaction type shown above may be called a condensation reaction because the small molecule H 2 O is eliminated from the reactants while the remaining bits of the reactant condense together to give the main product. This reaction may also be called an esterification‚ since the product of the reaction is an ester‚ a compound containing the CO2 R group (see chapter 11 for definitions of acids‚ esters
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Virtual Lab Enzyme Controlled Reactions Worksheet Which of the following does NOT apply to an enzyme Catalyst Inorganic Protein All of the above apply to an enzyme When an enzyme catalyzes a reaction Substrate(s) bind in the active site Products bind in the active site The shape of the enzyme remains unchanged The enzyme is consumed by the reaction Which of the following would interfere most with the ability of an enzyme to catalyze a reaction Reduced concentration of substrate available Reduced
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Experiment ENTHALPY AND ENTROPY OF ZINC WITH COPPER SULFATE The CCLI Initiative Computers in Chemistry Laboratory Instruction LEARNING OBJECTIVES The learning objectives of this experiment are to. . . ! ! determine changes in enthalpy and entropy of the reaction of zinc with copper sulfate using two methods: electrochemistry and calorimetry. compare the enthalpy values obtained by the two methods. BACKGROUND Thermodynamics is concerned with energy changes that occur in chemical and physical process
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Topic 10 Rate of Reaction Part A Unit-based exercise Unit 36 An introduction to rate of reaction Fill in the blanks 1 concentration; time 2 instantaneous 3 a) the gaseous product / carbon dioxide evolved b) loss in mass 4 a) colorimeter b) standard alkali c) the gaseous product / carbon dioxide evolved 1 time to reach the opaque stage 5 transmittance; 6 hydroxide; titrimetric True or false 7 T In the oxidation of methanoic acid by bromine‚ the intensity of the orange colour of bromine
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Introduction Aromatic compounds‚ which are planar cyclic rings with (4n+2)π electrons‚ will not undergo simple addition reactions like those of alkyl substances. However‚ in the presence of an electrophile‚ aromatic compounds will undergo electrophilic aromatic substitution. In this type of reaction‚ two π electrons from the aromatic ring serve for the ring to act as a nucleophile and attack an electrophile. For nitration‚ this nucleophile is NO2+‚ which is produced by reacting nitric and sulfuric
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CALORIMETRY KATHLEEN IVY B. MENDOZA DEPARTMENT OF CHEMICAL ENGINEERING‚ COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES DILIMAN‚ QUEZON CITY DATE PERFORMED: JANUARY 30‚ 2015 INSTRUCTOR’S NAME: JACOB NOEL M. INGUITO INTRODUCTION Calorimetry‚ derived from the Latin calor meaning heat‚ and the Greek metry meaning to measure‚ is the science of measuring the amount of heat‚ q.1 The amount of heat is absorbed (endothermic where qrxn >0) or released (exothermic where qrxn <0) by the system with
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07mmol‚ 158-160°C (160°C lit3)‚ 54.6% recovery. Thin layer chromatography was performed in three different eluents‚ hexane‚ toluene‚ and acetone. The chromatography compared aniline‚ 2‚ 4-dinitrobromobenzene‚ and a sample from the mixture of the two reactants when the reaction first began to take place. Another thin layer chromatography used a product sample an hour after the reaction first began and the eluent that showed the best separation of molecules. Table of Rf Values Table of Rf Values
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Design an experiment to investigate the stoichiometric mole ratio of a chemical reaction. Present your data in terms of the mass of one reactant compared to the mass of one product. Purpose: The experiment will be designed to find out the stoichiometric mole ratio of Barium Chloride and Silver Nitrate yielding a precipitate of Silver Chloride in a Barium Nitrate solution. (BaCl2 + 2AgNO3 -> Ba(NO3)2 + 2AgCl) Research Question: How will the amount of Barium Chloride and Silver Nitrate
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tosic acid[TSOH]. In this experiment Methyl salicylates are prepared along with ethyl and 2-propyl salicylates in which the reaction proceeds with salicylic acid as the starting material along with the other reactants such as methanol‚ ethanol and 2-propanol. More specifically‚ sulfuric acid is employed as the suitable acid catalyst. FIGURE 2: Formation of methyl salicylate from salicylic acid. 2. CALCULATION:
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Redox Arena-Part 1 Observations of all Standards: Table 1-Appearance of the Chemicals Chemicals Observations Boileezers Looks like tiny chalk-looking white rocks Desiccant Looks like small gray/white 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
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