water can have adverse effects on our body. You can measure the water hardness by EDTA titrations. EDTA is a disodium salt that stands for ethylenediaminetetraacetic acid and it is a chelating agent. Chelation is the process of a ligand forms a complex with a metal ion. Eriochrome Black T is an indicator you add to the water sample that will turn the water pink if metal ions exist. Through the process of titration‚ carefully adding EDTA to the water sample with the Eriochrome Black T will cause a chemical
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Date: October 29‚ 2014 Title: Thermometric Titration Purpose: To determine the concentration of sulphuric acid by thermometric titration Background Information: A thermometric titration is a titration technique where the endpoints of the reaction are located from the enthalpy change between the reagents. In thermometric titration we make use of the fact that reactions in solution are accompanied by temperature changes and thus it is possible to follow the course of the reaction with a thermometer
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Reflective writing : career talk 1 For me as a bio medical student‚ knowing my major and following vocation was a great concern until I participated in first career talk. On that time I understood the different concepts and functions of biomedical science. Also I should state that it’s vital for every student to know his/her majors’ expectations and base on it work hard to obtain essential features and knowledge. When I entered lecture room on the 4th floor I observed a friendly
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Methods: Two sodas containing citric acid were investigated in this experiment. Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods use the same basic set up. Firstly‚ the buret must be cleaned thoroughly with tap water. While cleaning the buret‚ it is also checked to make sure there are no leaks. The
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thiosulfate solution using the potassium iodate primary standard solution. Now we will examine the volumes of titrant‚ sodium thiosulfate‚ used in each trial. Your titration volumes of the sodium thiosulfate solution should be approximately 20 - 30 mL. For each trial‚ enter the precise volume in mL of sodium thiosulfate solution used in the titration of your
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Ferric Oxalate Trihydrate using Titrimetry Learn how to perform a quantitative chemical analysis. Learn how to perform a titration. Learn about Oxidation-Reduction reactions. In this laboratory exercise‚ we will determine the Percentage Oxalate Ion (C2O42-) in our Potassium Ferric Oxalate Trihydrate (K3[Fe(C2O4)3]•3H2O) sample using a technique called Titration; a type of Volumetric Analysis. This will involve adding a Potassium Permanganate (KMnO4) solution‚ whose concentration is previously
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chem labYoav Arjang 9/30/2012 AP Chemistry Lab Report I. Introduction: a) Title: The Establishment of a Chemical Equation Using the Method of Continuous Variation. b) Purpose: the continuous variation method is used to establish a chemical equation by displaying on a line graph the change/difference in temperature caused by the composition of acids and bases in the solution
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process influence the volume of sodium hydroxide‚ NaOH used during titration process until the colourless phenolphthalein indicator solution turns pink where the volume of potassium hydrogenphthalate used is kept constant at (22.5 ± 0.01) cm³ throughout the process? Independent variable : Concentration of potassium hydrogen phthalate‚ KHP. Dependent variable : Volume of sodium hydroxide solution used at the end point of titration Controlled
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semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl titrations are mainly to check technique and used to verify the molarity of NaOH solution. The hypothesis is that this acid is C4H3OCOOH. Experimental Procedure for melting point:
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Chemistry Laboratory Report Experiment #28: Hardness of Water Student: Assem Abichshayeva Lab. Partner: Marat Aitkhozha Dr.Brad Logsdon Date: 22.04.13 Purpose: The main purpose of this experiment is to standardize a solution of EDTA by titration against a standard solution made from calcium carbonate‚ CaCO3. Procedure: A 50-mL buret‚ a 250-mL volumetric flask‚ and 25- and 50-mL pipets were obtained from stockroom. The 0.5 g of calcium carbonate was weighted in a small 50-mL beaker. Approximately
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