Determination of Cobalt Oxalate Hydtrate Introduction The objective of this lab is for students to determine the percentage of cobalt oxalate hydrate using the gravimetric analysis. They will also do a redox titration to determine the percentage of oxalate in the compound. After the percentages are calculated‚ you will determine the percent water by the difference of Oxalate and Cobalt from %100. Procedure Determination of Cobalt 1. Weigh 0.3 g of solid cobalt oxalate hydrate (from lab 8) on a balance
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energy lost by Calcium Chloride and gained by Ammonium Nitrate when dissolved in Water. Theory: Exothermic reactions are when net energy is lost in process of reaction. When solid calcium chloride (chemical formula CaCl₂) is placed in water‚ the calcium chloride dissolves and liberates heat in the process. Calcium chloride is one of the ingredients in instant "hot packs" sold in retail stores. Some concrete mixes incorporate calcium chloride to decrease drying time. Calcium chloride is also used as a
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The halides in unknown solution were identified as iodide and chloride based on their experimental E°(Ag/AgX) values‚ -0.16 ±0.01V and 0.22 ±0.02V respectively. These results were both accurate with percent error of 5.96% for iodine and 0.9% for chloride. The literature value of E°(Ag/AgI) and E°(Ag/AgCl) were -0.151V and 0.222V respectively (1). In addition‚ the literature vales lay within the 95% confidence interval for both halides therefore the results were accurate. These results were precise
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Cobalt Complexes Lab 4 Cobalt and its slew of complex children Abstract: Through a series of substitution reactions‚ different cobalt ammine complexes were created. These complexes were analyzed via‚ precipitation and gravimetric measures to determine that the substitution reactions that occurred. Introduction: Coordination chemistry is an important part of inorganic chemistry that involves the association and dissociation of ligands to a metal. The size‚ shape
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As my opening statement I would like to proudly say cobalt is an element which has its own gum. Though completely irrelevant to my report I enjoy it’s succulent‚ minty and long lasting flavor‚ because five… will stimulate your senses. I figure I might as well go into the greater details of cobalt as well as what it is and how it came to be. In the year 1739‚ Swedish chemist‚ Georg Brandt was trying to prove to his colleges that Bismuth‚ the element credited for its believed ability to turn glass
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Experiment 11 Date: 28-3-2011 Title: Interpretation of reaction by the Le Chatelier’s principle Objective: To determine the factors that affecting the equilibrium position Introduction: Le Chatelier’s principle states that if a system in equilibrium is subjected to a change‚ the equilibrium position of the system will shift in a direction to minimize the effect of the change. Iron(III) ions and thiocyanate ions (NCS-) react in solution to produce thiocyanatoiron(III) (FeNCS2+)‚ a
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Lab: 5 Experiment:13 Pre-Lab The purpose of this experiment is to observe an equilibrium 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
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by the Le Chatelier’s principle Objective:To determine the factors that affecting the equilibrium position Introduction Iron(III) ions and thiocyanate ions (NCS-) react in solution to produce thiocyanatoiron(III) (FeNCS2+)‚ a complex ion‚ according to the equation : Fe3+(aq) + NCS-(aq) [pic] FeNCS2+(aq) yellow colourless blood red The colour produced by the complex ion indicates the position of equilibrium. In this experiment‚ iron(III) chloride solution
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“The Synthesis of Zinc Chloride”‚ what a peculiar name for a lab that does not even involve synthesis. Synthesis‚ by definition‚ is when two elements are combined in a chemical reaction‚but that is not the case. In this lab we are combining zinc‚ an element‚ and hydrochloric acid‚ a compound‚ but combining a compound and an element is not synthesis‚ it is single replacement. We are taking zinc and hydrochloric acid and making zinc chloride and hydrogen‚ a single replacement‚ but what occurred during
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07.05 Le Chatelier ’s Principle Research Project Fritz Haber was born in December of 1868‚ in Prussia to a German chemical merchant. He went into the field of organic chemistry at the University of Jena. He was appointed as director of the Kaiser Wilhelm Institute for Physical Chemistry in Berlin in 1911. He was in charge of forming a center for cross-disciplinary research and gave his country the knowledge of ammonia and other significant fertilizers. He left Germany in 1933 after their loss
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