DETERMINATION OF COPPER BY COMPLEXATION‚ SOLVENT-EXTRACTION AND SPECTROPHOTOMETRY ABSTRACT To determine the concentration of copper in an unknown solution by using copper complexation‚ solvent extraction and spectrophotometry. Standards are used to create a calibration curve and the unknown concentration of copper is then calculated by using the linear equation from the calibration curve. The concentration of copper in the unknown solution 201 was found to be 12.57± 0.25 μg/mL. INTRODUCTION Copper
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Experiment No. 2: Dynamic Equilibrium and Le Chatelier’s Principle December 1‚ 2011 Final Formal Results Le Chatelier’s Principle states that “when a stress is applied to a chemical system at equilibrium‚ the equilibrium shifts in a direction that reduces the effect of stress” (Gross‚ Abenojar‚ and Tan 23). Moreover‚ it helps us “predict the direction of the shift of the equilibrium” (Silberberg 745). Silberberg also stated that there are three kinds of disturbances - concentration‚
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Experiment A Spectroscopic determination of Iron with Phenanthroline Unknown # 2 Mass of Mohr’s Salt: 0.2040 1. 5mL of 6M acetic acid was measured and transferred into a 100mL volumetric flask with a pipette and diluted to the mark. Concentration = [0.2040(±0.0001)g/100(±0.08)mL]*[(1mol/392.16g)/(1L/1000mL)] = 0.005202(±0.09382%) = 0.005202(±0.000005)mol/L 2. 10mL of the above stock solution was transferred to a 250 mL volumetric flask and diluted to the mark. Concentration
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Introduction: In this lab a total of six titrations are to be performed. Three of them will be done using a known Ca2+ solution‚ (1.000 g CaCO3 /L solution) and three of them will be done using an unknown solution obtained from the stock room. The objective of this lab is to determine the hardness of water‚ using the data collected from each titration performed with the unknown sample. Since the hardness of water arises from the presence of metal ions‚ we can use disodium salt of EDTA and the
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Experiment 1: APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES LEE‚ Hyun Sik Chem 26.1 WFV/WFQR1 ------------------------------------------------- Nov. 23‚ 2012 A skillful researcher aims to end his study with a precise and accurate result. Precision refers to the closeness of the values when some quantity is measured several times; while accuracy refers to the closeness of the values to the true value. The tool he utilizes to prevent errors in precision and
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Objectives To study the quantitative relationship between the amount of reactants and products of a reaction ( that is how many moles of A react with a given mol of B). A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the
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Lab Report 1Hardy Weinberg Equilibrium Note on late reports: You have almost one month to complete this lab report. I will NOT accept late lab reports. You must turn the report in at the start of class (that means 1:00 AM sharp!) December 1‚ 2010. If you come to class late‚ I will not accept your lab report. Please consider e-mailing me your report before you come to class to make sure it is not late. Here is what I expect you to cover in your report: 1. Introduction: Provide a brief
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price above the equilibrium price reduces social welfare In a free market demand and supply alone determine the price. This means that quantity of demand and quantity of supply equate at this point is where the price is set which is therefore called equilibrium price. (Griffiths‚ 2011) Figure 1 illustrates where supply and demand intersect‚ this being the Equilibrium price and Quantity
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Market Equilibrium Process Economics/561 Monday‚ February 6‚ 2012 Professor Michael Shackelford Market Equilibrium Process According to "Business Week" (n.d.) “Market equilibrium is a situation in which the supply of an item is exactly equal to its demand. Since there is neither surplus nor shortage in the market‚ price tends to remain stable in this situation.” (Market Equilibrium). The market equilibration process is very important to manufactures and sellers in the marketplace
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subscription information: http://www.tandfonline.com/loi/tnst20 Characteristics of Several Equilibrium Fuel Cycles of PWR a Abdul WARIS & Hiroshi SEKIMOTO a a Research Laboratory for Nuclear Reactors‚ Tokyo Institute of Technology‚ 2-12-1 Ookayama‚ Meguro-ku‚ Tokyo‚ 152-8550 Published online: 07 Feb 2012. To cite this article: Abdul WARIS & Hiroshi SEKIMOTO (2001) Characteristics of Several Equilibrium Fuel Cycles of PWR‚ Journal of Nuclear Science and Technology‚ 38:7‚ 517-526‚ DOI:
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