CH 127 – Chem 2 Lab Determination of an Equilibrium constant Goals The purpose of this experiment is to determine the equilibrium constant for the reaction Fe3+(aq) + HSCN(aq) –>FeSCN2+(aq) + H+(aq). The equilibrium constant expression Kc for Reaction is kc=FeSCN2+[H+]Fe3++[HSCN] Procedure *Preparation of the Beer’s law plot Prepare five solutions of FeSCN2+(aq) of known concentrations between 1x10-5M and 1x10-4M by diluting various volumes of 4.62x10-4 HSCN. Calculate the Final concentration
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The movie Equilibrium directed by Kurt Wimmer‚ and the book 1984 written by George Orwell both explore what would happen when a government has complete control. When you let someone think for you and make all of your decisions‚ you lose what makes you human‚ which is your free will‚ and your ability to make conscious decisions. In both the text and movie they take away human identity to gain control. The key differences are the ways Big Brother and Father seize control‚ and what effect it has on
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cotton prices. The changes in cotton clothing market give us a good opportunity to illustrate the Principle of Market Equilibrium that any time there is an imbalance between supply and demand‚ economies will normally move toward an equilibrium in which no individual would be better off doing something else. In fact‚ we have now seen that a market tends to have a single price‚ the equilibrium price at which the quantity demanded of a good or service is equal to the quantity supplied. When the demand and/or
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Children Living with Attention Deficit Hyperactivity Disorder in today’s Society Shawnteka Tinsley College Reading and Study Skills Proffessor LaLinda Street March 19‚ 2013 Children living with Attention Deficit Hyperactivity Disorder In this article the authors Melinda Smith & Robert Segal discuss the behavior of children with Attention Deficit Disorder (ADD); Attention Deficit Hyperactivity Disorder (ADHD). There are many noticeable symptoms that are recognizable before diagnosing
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Current Market Conditions Competitive analysis To successfully complete a current market conditions competitive analysis of Apple’s iPhone one must first examine the history of this product. Apple released the first generation of iPhone on June 29‚ 2007. Apple’s CEO Steve Jobs made an announcement to introduce the iPhone in San Francisco at the MacWorld Conference and Expo. Jobs told the crowd the iPhone was five years ahead of the market of cell phones. The development of the iPhone was based
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Case in the news: Demand/Supply and Equilibrium This article is based on the fundamental idea of supply and demand of the iPhone 5 whose demand has outstripped its supply. Due to the fact that the demand is so high‚ even those who pre-ordered the new slim iPhone 5 had to wait until October to get this new phone. The sales have broken all previous records and stand tall at 2 million phones in the first 24 hours. According to the article people had been
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Analytical and Equilibrium Molrity Analytical Molarity is the total number of a solute‚ regardless of its chemical state‚ in one liter of solution • describes how a solution is prepared(recipe) 98.0 g H2SO4 dissolved in water diluted to 1.0 L. 1.0 M H2SO4 Equilibrium Molarity or species molarity is the molar concentration of a particular specie in the solution. • requires a careful analysis on how solutes behave when it is dissolved in solvents 1.0 M H2SO4 (AM) 0.0 M H2SO4
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Chemical equilibrium is the point at which the concentrations of reactants and products do not change with time. It would appear as if the reaction has stopped‚ but in fact‚ the rates of the forward and reverse reactions are equal‚ causing the reactants and products to be created at the same rate. This can be expressed mathematically in the form of the equilibrium constant. The following is the general equation for a reversible chemical reaction: aA+bB →cC+dD
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temperature before and after mixing was recorded and included in tables. When the experiments were completed analysis was performed using the laws of thermodynamics. The data collected was used in equations to find theoretical values for final equilibrium temperature. The theoretical values were compared with those measured during the experiment. The total average percent difference between the measured final temperature and the theoretical final temperature is less than 5.0%. This low deflection
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Determination of an Equilibrium Constant Abstract: In this experiment‚ two reactions were run to determine the molar absorptivity and the equilibrium constant of FeSCN2+. The main principles used in this lab are equilibrium‚ LeChatlier’s Principle‚ Beer’s Law and Spectrocopy. The first reaction was run to completion using LeChatier’s Principle and the second reaction was run to equilibrium. A spectrophotometer was used to measure absorbances. Using a graph of absorbance versus concentration
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