How does a catalyst in the form of a metal ion affect the rate of reaction in an iodide clock reaction with potassium peroxydisulphate ions? Background When peroxydisulfate ions (S2O82-) react with iodide ions (I-) in the presence of a starch indicator‚ they produce a dark blue solution. Reaction (1) S2O82- + 3I- I3- + 2 SO42- (peroxydisulfate ion) (iodide ion) (iodine ion) (sulfate ion) To determine the rate law for this reaction a series of changes
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Many advanced high school and college chemistry students perform an experiment known as the "iodine-clock" reaction‚ in which hydrogen peroxide reacts with iodide to form iodine‚ and the iodine subsequently reacts with thiosulfate ion until the thiosulfate has been consumed. At that point‚ the reaction solutions turn blue in the presence of starch. The experiment helps students understand the fundamentals of chemical kinetics --- the speeds at which reactions take place. 1. Activation Energy
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Microenvironment This section will focus on the factors within the company that effect its ability to serve its customers and follow its strategy successfully. The factors that will be looked at are: The company‚ suppliers‚ intermediaries‚ customers‚ competitors and publics. The Company HSBC is one of the world ’s largest and most successful banks. To have an idea of its magnitude have a look at the organisational structure (appendix 1). In the UK alone it has 1700 branches‚ approximately
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shareholders‚ they would be very happy. HSBC has exceeded its profit expectations in the first quarter of 2011. The bank generated a $11.5 billion pretax profit for the first half of 2011 up from $11.1 billion a year ago. But to the bank’s employees‚ they may not dare to join the celebration. It is because most of them would become unemployed in the next second. HSBC announced its strategy to cut 30‚000 jobs before 2013 for cost savings and shaping the business strategy. Due to the HSBC’s layoff plan
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HSBC (The Hong Kong Shanghai Banking Corporation): INTRODUCTION: HSBC is the world’s second-largest banking and financial services group. The origins of the bank lie in Hong Kong and Shanghai‚ where its branches were first open in 1865. Number of location is around 7‚500 offices in 87 countries and territories; Only in united states it has more than 460 bank branches‚ 210.000 shareholders‚ 300‚000 staff‚ and approximately 128 million customers worldwide. Throughout the world among the multinational
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The HSBC Money-Laundering Scandal Case Facts HSBC is one of the largest financial institutions in the world‚ with assets over $2.5 trillion‚ 89 million customers‚ 220‚000 shareholders‚ operations/affiliates in 85 countries‚ and 2011 profits of nearly $22 billion (HSBC‚ 2011a). Drawing upon evidence revealed following a year-long investigation into HSBC (Levin et al.‚ 2012)‚ seven areas of case fact illustrating key anti-money laundering (AML) and terrorist financing problems can be seen including:
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Analysis The 13 Clocks is a fairy tale told by a twentieth century author. Its themes are clearly statements about the moral concerns of the time and perhaps are intended more for adults than for children‚ even though James Thurber used the form of a child’s story. One of the story’s meanings is that a true life is in a way being like a child. Adults responded to Thurber’s message: The book sold well‚ going into nine printings. Thurber had earlier written fairy tales for children as well as
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The History of Clocks | |The history of clocks is very long‚ and there have been many different types of clocks over the centuries. Not all historians agree on the history of the clock. The word clock was first used in the 14th century (about 700 years ago). It comes from the word for bell in Latin ("clocca"). Using the Sun The first way that people could tell the time was by looking at the sun as it crossed the sky. When the sun was directly overhead in the sky‚ it was the middle of the day‚ or
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learned in the class. Our case study that we picked talked about the clocks and how the society shaped the way of measuring time throughout history. The clock nowadays are technology that has been taken for granted. The focus of this case study is to show the importance of time measurement and how our life nowadays revolves around it. By going through history all the way from using the sun and stars to the development of clocks that neither lose nor gain one second in 200 million years to show how
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PROPELLER CLOCK OBJECTIVE :- In this project‚ our aim is to use PIC or 8051 microcontroller to control a row of LEDs to function it as a clock. ABSTRACT :- The Propeller Clock is an electronic device which has a series of LEDs on board that rotate with the help of a motor to give an illusion of a watching a clock ( Digital or Analogue ). This requires a DC motor which rotates the PCB connected to it with sufficient speed so as to create the illusion. The LEDs are connected to a microcontroller
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