Investigating the factors affecting the rate of a chemical reaction. Introduction: In my coursework I will be mainly concentrating on the reaction between dilute hydrochloric acid with marble chips (calcium carbonate). Calcium carbonate (marble chips) + hydrochloric acid ==> calcium chloride + water + carbon dioxide CaCO3(s) + 2HCl (aq) ==> CaCl2 (aq) + H2O (l) + CO2 (g) Aim: The aim of the experiment is to investigate how the concentration of hydrochloric acid affects the rate of reaction
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Reactivity of Halide Ions Purpose: There are four halide salts used in this experiment that are found in the human body. Sodium fluoride is poisonous‚ but has been traced to be beneficial to humans in the prevention of tooth decay. Sodium chloride is added to many of our foods to increase flavor. Sodium chloride is important for many life processes‚ but too much intake is linked to high blood pressure. Sodium bromide is distributed throughout body tissues. Sodium iodine controls cell growth. The
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F7 Essay Writing (Kinetics) Q. Write an essay on factors which affect the rate of reactions and discuss the uses of kinetic studies. Outlines: (I) Factors affecting the Rate of Reaction (a) temperature ---- collision of molecules with different velocities and kinetic energies ---- Collision Theory and Maxwell-Boltzmann distribution ---- Arrhenius equation and Activation energy (b) concentration ---- frequency of collisions and effective collisions
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Investigating Aspirin Aims Synthesize my own aspirin Analyse the purity of my aspirin samples (aspirin and recrystallized aspirin) compared to commercial aspirin by use of analysing melting points‚ TLC plates and colorimetry tests Investigate how pH effects the rate of hydrolysis of aspirin Background theory Making my own sample of Salicylic acid (to then be converted into Aspirin) Salicylic acid (2-Hydroxybenzoic acid) can be made by hydrolysing methyl 2-hydroxybenzoate. Oil
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Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Abdud Dayan Adeeb Of Class XII C St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Jagadeesh
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Investigating the relationship between the financial and real economy Konstantinos Tsatsaronis Central banks have always recognised the importance of financial stability for overall macroeconomic performance‚ but questions related to the health of the financial system have traditionally taken a back seat to those more directly linked to the process of inflation and growth. In recent years‚ however‚ financial stability has gained greater prominence on central bankers’ agenda. Monitoring the performance
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Biochemistry Unit The Kinetics of Alkali Phosphatase Inhibition 1. OVERVIEW This practical builds on the enzymology lab skills you learned in the Acid Phosphatase practical. Again‚ you will measure the initial reaction velocity (V 0) of an enzyme reaction‚ but this time in the absence and then presence of an inhibitor. Last time you used Acid Phosphatase (Prac 1)‚ but this time you will use the enzyme Alkali Phosphatase. These enzymes have different primary (and hence tertiary) structures
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Determination of Percent Potassium & Percent Iron in an Iron Oxalate Salt by Ion Exchange Introduction: This experiment involves determining both the percent potassium (K) and iron (Fe) in a single titration after passing a solution containing a known mass of complex salt through an ion exchange column. Ion Exchange: Certain materials called ion exchange resins consist of rather large molecules which contain ions that can be displaced. The resins are solids‚ insoluble in water‚ usually granular
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Ion Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the
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Important Ions in the Body and the Roles They Play Everyday Functions of the Human Body The human body uses many forms of energy to conduct daily activities. These activities can be ones that we are doing physically or they can be as basic as the breakdown of enzymes within our body or the digestion of food. Chemical energy‚ electrical energy‚ mechanical energy‚ and electromagnetic energy are a few but important forms of the type of energy utilized by the human body. Ions play an important
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