Title: Factors affecting reaction ratesProcedure A: Effect of ConcentrationAim: To investigate how the concentration of a reactant affects the rate of reaction. Hypothesis: The more concentrated the reactant‚ the faster the rate of reaction. Materials: 2M hydrochloric acid solution‚ magnesium wire‚ distilled water‚ 4 test-tubes‚ measuringcylinder. Procedure:1)10mL 2M hydrochloric acid solution is poured into a test-tube using a measuring cylinder. 2)A 3cm length of magnesium wire is added to
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are: Glycosis‚ the Krebs cycle‚ and the electron transport chain. What is the role of glycolysis? Include the reactants and the products. Where does it occur? Glycolysis is the first stage in cellular respiration. Glycolysis occurs in the cytoplasm also. Glucose is converted and then passed onto the Krebs cycle. What is the role of the citric acid cycle? Include the reactants and the products. Where does it occur? The citric acid cycle is also known as the Krebs cycle. This is the second
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takes 150 years to form the product! *Many chemical reactions occur very quickly. *Studying Reaction Rates *Defined as the change in concentration of reactants of products per unit time. *Units: mol dm¯³ s¯¹ *Rate of Reaction * ‚ the change in concentration‚ can be measured by monitoring a property that will change when the reactants are converted into products: 1. 2. 3. 4. Change in pH (for acid base reaction) Change in conductivity (for reaction involving electrolyte) Change in mass
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presence of Fe3+ ions. Lastly‚ for the Ag+ test‚ the HCl was added to the supernate shown in the ionic equation below: Ag+(aq) + Cl-(aq) AgCl(s) A white precipitate formed which indicates the presence ogf Ag+ ions. Since the reactants
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concentrations of the reactants and products‚ needed to calculate the equilibrium constant for the reaction. I. Introduction: The purpose of the experiment is to determine the equilibrium constant for the formation of a complex ion iron (III) thiocyanate (FeSCN2+). This ion is formed in the reaction of iron (III) ion with thiocyanate ion SCN-): Eq.1 Fe3+ (aq) + SCN- (aq) FeSCN2+ (aq‚) The equilibrium constant is the ratio between the reactants and products when
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average masses different from each other. These changes occur in ratios‚ and rarely occur in simple whole numbers. When a chemical reaction occurs‚ how do the masses of reactants and products compare? In this experiment we will be making a comparison between the masses of reactants and products and the number of moles of reactants and products. PROCEDURE Polish the zinc strip using steel wool and then determine its mass. Allow the strip to sit in lead acetate for approximately an hour and
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Determination of Energy Balancing In a fuel cell power vehicle: http://www.scribd.com/doc/49625260/39/Fuel-Cell-Energy-Balances Fuel Cell * What is fuel cell * Why we need fuel cell * History of fuell cells * Mathematical methods * Classification of fuel cells * Parts of a fuel cell * Fuel Cell Setup * Modeling of fuel cell * Fuel cell system design * Advantages and disadvantages of fuel cell * Future scope of fuel cell Energy Balance in Fuel Cells
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reaction counteracting changes to it’s system all in accordance to Le Chatelier’s principle. An equilibrium reaction can be pushed toward products or reactant based on changes in temperature or concentration. The reversibility of reaction will also be looked at. Pre-Lab questions 1. The concentrations of products and concentrations of reactants remain constant but both reactions are still going on‚ just at the same rate. 2. Le Chatelier’s principle when an equilibrium has been established
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LeChâtelier’s Principle. Background Not all chemical reactions proceed to completion‚ that is‚ to give 100% yield of products. In fact‚ most chemical reactions are reversible. In the forward direction‚ reactants interact to make products‚ while in the reverse direction the products revert back to reactants. This idea is represented symbolically using double arrows. In a closed system‚ any reversible reaction will eventually reach a dynamic balance between the forward and reverse reactions. A system
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Module No. 6 Energy Relationships in Chemical Reactions The Nature of Energy and Types of Energy Energy – is the capacity to do work or to transfer heats. Forms of Energy 1. Kinetic energy 2. Radiant energy 3. Thermal energy 4. Chemical energy 5. Potential energy Energy Changes in Chemical Reactions Heat – is the transfer of thermal energy between two bodies that are at different temperature. Thermochemistry – is the study of heat
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