Chemistry 12 Unit 1 - Reaction Kinetics Chemistry 12 Worksheet 1-3 - Reaction Mechanisms 1. It is known that compounds called chlorofluorocarbons (C.F.C.s) (eg. CFCl3) will break up in the presence of ultraviolet radiation‚ such as found in the upper atmosphere‚ forming single chlorine atoms: CFCl3 CFCl2 + Cl The Cl atoms then react with Ozone (O3) as outlined in the following mechanism. Step 1: Step 2: Cl + O3 ClO + O2 ClO + O Cl + O2 (single "O" atoms occur naturally in the atmosphere
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such as stoichiometry‚ intermolecular forces‚ thermodynamics‚ kinetics‚ equilibria‚ and electrochemistry will be developed in order to prepare students for a deeper exploration of chemistry. The concepts developed within the lectures and workshops are complemented through an extended laboratory program where students will have the opportunity to develop analytical techniques and design their own experiments to solve a range of chemical problems. Mode of Delivery Workload Day Only Per week: Two 1-hour
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PRACTICAL REPORT NAME: ROXANNE STUDENT NO: 24681012 MODULE CODE: MCHE 321 EXPERIMENT NO: 2 TITTLE: KINETICS 2: TEMPERATURE OF THE REACTION: OXALIC ACID-POTASSSIUM PERMANGANATE REACTON Title: Temperature of the reaction: Oxalic Acid-Potassium Permanganate Reaction System Author: Miss Cleopatra Saul Abstract: The purpose of this experiment is to determine the rate of a chemical reaction (potassium permanganate‚ KMnO4‚ + oxalic acid‚ H2C2O4) as the concentrations are varied and to determine
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effect chemical warfare in WW1 had on the soldier. In World War 1‚ the development and use of poison gases were created mainly to end the stalemate risen by the unexpected trench warfare . These poisonous gases‚ such as mustard gas‚ were close to impossible to avoid in or out of a trench because they were denser near the ground when released‚ causing greater suffering to those ducking for cover. It wasn’t until World War 1 that chemical warfare was given a definition‚ the use of chemical munitions
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minutes. 4. a) The hydrogen peroxide is used up and the manganese dioxide remains unchanged. Part two Title: Enzyme Function Purpose: To observe the role of enzymes in chemical reactions and to determine the kinds of cells that contain more of the enzyme catalase. Prior Knowledge: Enzymes are proteins that assist the chemical reactions of a cell by lowering the amount of activation energy needed to start the reactions‚ thereby enabling the cell to carry out the reactions at a faster rate; enzymes
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INTRODUCTION Chemical kinetics‚ which can also be explained as reaction kinetics‚ studies the rates of chemical processes and reactions. A lot of this has to do with the speed at which a chemical reaction occurs for instance the rate at which reactants and products appear and disappear. In this case chemical kinetics goes further in depth to understand what conditions affect the rate of a given reaction. This is important because it allows scientists to determine what type of reaction can occur
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Observations of Chemical and Physical Change PART 1 – OBSERVATIONS OF CHEMICAL CHANGE No credit will be given for this lab report if the Data section is not completely filled out and if the required photographs are not received. At least one photograph must show the student’s face. OBJECTIVES 1. Observe physical and chemical changes. 2. Define physical and chemical change. 3. Identify the relationship between a chemical change and a chemical reaction. 4. Observe several indicators of a chemical reaction
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Catalysis: Catalyst: * catalyst is substance that increases the rate at which a chemical reaction approaches equilibrium‚ but is not consumed in the process * not reagent or product; noted above equation arrow * participates in kinetic equations‚ but not in eq constant Catalytic Cycle: * succession of chemical changes undergone by the catalyst until it recovers its initial state Catalysis=Kinetic phenomenon * catalyst creates alternative path for reaction‚ more complex but
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B. The Periodic Table: Classification of Elements into Groups by Electronic Structure; Physical and Chemical Properties of Elements 1. Alkali metals 2. Alkaline earth metals 3. Halogens 4. Noble gases 5. Transition metals 6. Representative elements 7. Metals and nonmetals 8. Oxygen group C. The Periodic Table: Variations of Chemical Properties with Group and Row 1. Electronic structure a. representative elements b. noble gases c
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Case 3: The Grayson Chemical Company The Company The Grayson Chemical Co. manufactured industrial chemicals for sale to other industrial companies. The company was about 40 years old and had been run by a stable management under only two presidents. Within the past few years‚ however‚ declining earnings and sales had brought pressure from the board of directors‚ investment bankers‚ and stockholder groups to name a new president. The company had grown increasingly stagnant – although at Grayson
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