# Stoichiometry

Page 1 of 7 - About 69 Essays
• ## Lab Report: Copper/Iron Stoichiometry

Sarah Bounab BQD Experiment 2: Copper/Iron Stoichiometry Abstract: The purpose of the Copper/Iron Stoichiometry lab was to determine which of the two possible iron sulfate compounds formed when reacting aqueous copper(II)sulfate with solid iron metal. The techniques used in this lab were weighing by difference, quantitative transfer, and vacuum filtration. At the end of the experiment it was found that iron was the limiting reactant and iron(II)sulfate was a product of the reaction between 7.0002g of copper(II)sulfate and 2.0101g iron metal which produced 2.3037g of copper product with a percent yield of 100.72%. Introduction: Much research has gone into studying how to best utilize the degradation abilities of various bacteria and fungi.…

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• ## Essay On The Difference Between Theoretical Yield And Stoichiometry

In the scientific world, there is a significant difference between calculated values and values measured in investigations. Percentage Yield is the ratio, between masses, of the actual yield to the theoretical yield. The actual yield is the amount or mass of product actually collected during an experiment or industrial process, while the theoretical yield is the amount or mass of product predicted based on the stoichiometry of the chemical equation. In order to calculate the theoretical yield,…

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• ## Essay On Stoichiometry

Background : Stoichiometry is the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers. In the lab that I did with my group we used stoichiometry to find out the decomposition of sodium biocarbonate. Sodium carbonate is just another name for baking soda, and that is what we used on our lab. Baking soda is also used in some food items, such as pancakes, waffles etc… When the baking soda is being heated…

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• ## Limiting Reactants Lab Report

The purpose of the experiment was to observe limiting reactants by using a fixed amount of one reagent along with a varying the amount of the second reagent used in a chemical reaction. Through these results, the concept of limiting reactants can be determined. Using a graph to demonstrate the relation between the volumes of hydrogen gas produced versus the moles of the reagents will help figure out the stoichiometric balance required. The success of the experiment will be determined by the…

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• ## Zinc Iodine Experiment

Title: Stoichiometry to Calculate Reaction of Zinc and Iodine and Law of Conservation of Mass Authors: Sang Nguyen and Sami Biro Introduction II. Materials and Methods A. Materials Zinc (Zn), iodine (I2), acetone (C3H6O), acetic acid (C2H4O2) and zinc iodide (ZnI2) were used to conduct this experiment in order to confirm the validity of the law of conservation of mass as well as to use Stoichiometry to calculate the reaction between zinc and iodine. There are some precautions that one must…

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• ## Synthesis Of 6-Deoxycellulose Derivatives Lab Report

T. Heinze et. al. reported the synthesis of new 6-deoxy-6-pheylethylamino cellulose derivatives with DSamino 0.4-0.6 by nucleophilic displacement of cellulose tosylates (DSTos 0.74 and 1.29) with a racemic mixture of 1-phenylethylamine under homogeneous conditions, in DMF/H2O82, scheme 30. The optical properties of these deoxyamino cellulose derivatives was studied. A regioselective synthesis of 6-amino-6-deoxycellulose, 6-N-sulfonated, and 6-N-carboxymethylated deoxycellulose were…

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• ## Preparation Of Biis-Thiourea Derivatives Case Study

CHAPTER 4 RESULT AND DISCUSSION 4.1 Preparation of Bis-Thiourea Derivatives The mixture of heptanoyl chloride and ammonium thiocynate with 1,4-phenylene diamine appeared as homogeneous solution. White precipitate was formed immediately when the solution was filtered into the beaker containing ice cubes. Then, the precipitate was filtered again and rinsed by ethanol before being dried in the desiccator. The physical data of the synthesized bis-thiourea derivatives are shown in Table 4.1.…

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• ## Gravimetric Analysis Colourimetry

because of some errors that occurred during the gravimetric analysis sections of the investigation. Moreover, with the initial hypothesis stating that colourimetry would be the better method due to the fact that gravimetric analysis is subject to various errors, the statement ultimately agrees with the trends in the data, none of which were present for the graphs showcasing gravimetric analysis results due to the fact of errors occurring within these sections of the investigation. Nonetheless,…

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• ## Stoichiometry Lab Report

The purpose of this experiment was to evaluate the stoichiometric relationship between the testing agents and to identify the products formed. The relationship was found by completing three acid and base neutralization reactions using phosphoric acid, which is a triprotic acid, with different volumes of sodium hydroxide. Introduction When looking at the coefficient of balanced equations, stoichiometry is seen. Coefficients represent the number of moles, equivalent to the mass of an atom, of…

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