Lab #3: Method of Initial Rates: Iodine Clock Introduction The detailed system of steps in a reaction is called the reaction mechanism‚ and it is one of the principal aims of chemical kinetics to obtain information to aid in the elucidation of these mechanisms in order to better understand chemical processes. Reactions usually occur in a stepwise manner with each step proceeding at a different speed. If the rate of reaction is slow enough to measure‚ this is indicative of a step much slower
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Experiment 16: Kinetics: The Iodine Clock Jane Smith Purpose: The objective of this experiment was for students to apply their knowledge of kinetics and rate laws in order to determine the rate of a chemical reactions‚ activation energy‚ and frequency factors of those reactions. Specifically‚ this experiment was performed using a series of solutions with varying concentrations of KI‚ Na2S2O3‚ and (NH4)2S2O3 . Students recorded time elapsed to observe physical evidence of a reaction taking place
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History of Clocks and the Impact of Electricity on them. Introduction: In this poster we are going to show you the history and the development of the clock through time and how it has impacted society. We will also show how electricity has affected the development and effectiveness of clocks. Sun clock: One of the first clocks on record is the sun clock. Sun clocks basically work on the principle that the position of a stationary object’s shadow will be in the same place at a certain
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Symbolism Analysis: Gatsby’s Clock Have you ever wanted to turn back time and relive the past? In The Great Gatsby by F. Scott Fitzgerald‚ Fitzgerald tells a story of a man named Gatsby who was once poor and became wealthy in order to get Daisy‚ a girl who is a part of the “old money” society. He attempts to accomplish this goal by establishing a friendly relationship with Nick‚ who is Daisy’s cousin. Unfortunately‚ Gatsby’s goal of getting Daisy and reliving the past backfires and vanishes forever
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In The Death of Grandfather Clock‚ Lin Lane depicts the nagging effect that time tends to have by utilizing symbolism. In the first stanza‚ the poem expressly states‚ “I am quite annoyed by the ticking... By the ever-present clicking”. The poet explicates how the constant ticking stresses the limited time one has to fulfil one’s responsibilities and aspirations. In the second stanza‚ Lane expands on her point by wondering‚ “Must Grandfather Time command my life?” The poem uses the “Grandfather Time”
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EFFECT OF CONCENTRATION ON REACTION RATE The aim of this experiment is to find the effect of varying the concentration of iodide ions on the rate of reaction between hydrogen peroxide and an acidified solution of potassium iodide: H2O2(aq) + 2H+(aq) + 2I⁻ → 2H2O(l) + I2(aq) The course of this reaction can be followed by carrying it out in the presence of small quantities of starch and sodium thiosulfate solutions. As the iodine molecules are produced they immediately react with the thiosulfate
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Some countries in the world use a 24 hour clock. In other words‚ instead of saying 3 a.m. and 3 p.m. to distinguish between morning and afternoon times‚ they say 0300 and 1500. In many countries‚ this is the standard and is called the 24 hour clock. In a few countries‚ like the U.S.‚ a 12 hour clock is the standard default for the general population‚ but certain sub-populations‚ such as the military‚ use the 24 hour clock. In those countries‚ this is often referred to as military time. For the
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This experiment was a Landolt Iodine clock reaction - Oxidation of Bisulphite by Iodate. It involved conducting three measured experiments. The first variable tested was concencentration. This was tested by conducting two experiments‚ each varying the concentration of either the NaHSO3 or KIO3. The varying of NaHSO3 involved using 0.1 Molar of KIO3 against decreasing concentrations of NaHSO3 (0.25 M‚ 0.125 M‚ 0.0625 M and 0.03125 M). When decreasing the concentration of KIO3‚ 0.25 M of NaHSO3 was
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The reality of death is viewed through James McAuley and W.H. Auden’s poems “Pieta” and “Stop all the Clocks”. Comparatively McAuley’s “Pieta” is an anniversary poem written one year on from the death of the narrator’s child whereas Auden’s “Stop all the Clocks” explores the emotional loss felt between an individual who cannot accept the death of a loved one. McAuley provides context in “Pieta” when readers realise the poem is an anniversary poem. It has been one year since the narrator’s child
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Discussion Questions: 1. Critically discuss the purpose and application of the following two models‚ and highlight any differences between them: (a) Porter’s Generic Strategies (b) The Strategy Clock Purpose of Porter’s Generic Strategies and Bowman’s Strategic Clock are both aimed to help companies understand how they compete in the marketplace. Base on the different combinations of price and perceived value‚ companies should know how to choose a position of competitive advantage that understanding
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