Chemical Kinetics: The Iodine-Clock Reaction: S2O82−(aq) + 2 I−(aq) → I2(aq) + 2 SO42−(aq) To measure the rate of this reaction we must measure the rate of concentration change of one of the reactants or products. Here‚ it is convenient to carry out a clock reaction involving the product I2. To do this‚ you will include (to the reacting S2O82− and I−) i) a small (but accurately known) amount of sodium thiosulfate‚ Na2S2O3‚ and ii) some starch indicator. The added Na2S2O3 does not interfere with
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Investigating the effects of changing concentration: iodine clock reaction. Abstract This is an experiment to show the Iodine Clock Reaction. To create a chemical reaction to see how long it takes for solution to change to a dark blue Color. When changing the concentration of the iodide (K1) and adding distill water to make it up to 5cm³ each time. This is to see if the reaction takes less with less concentration or faster with more concentration added to the peroxodisulphatee. So with the solution
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foundation has begun to develop some cracks and has become a little shakier than it used to be‚ as cheap oil and natural gas become harder to find and acquire. Even if we were to develop a new source of energy and a more fuel-efficient car today‚ without oil‚ modern civilization as we have come to know it is still in deep trouble. To start with the basics‚ armies aren ’t the only organizations that run on their stomachs. So do civilizations. Agribusiness is totally dependent upon large machines and
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The World Without the Internet The Internet is a world wide network of interconnected educational‚ governmental‚ and business computers. Anyone with a personal computer and a modem can communicate across the Internet. Your computer does this by sending data‚ via an electronic Internet Protocol (IP) packet‚ to a particular destination on the Internet. Communications software "reads" the addresses and forward the packets. Since the mid-1980s‚ the Internet has grown from a thousand or so networks to
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tripled within a decade‚ The city built four prisons in the mid-1990s- a rare growth industry” (Thompson). After reading Derek Thompson‚ a triple major in journalism‚ political science‚ and legal studies from Northwestern University’s article “A World Without Work”‚ I was concerned as to how the increasing number of incarcerated laborers were being treated as well as their quality of life. Subsequently‚ through investigating the topic in the United States I discovered that the imprisoned laborers are
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With these results‚ the effect of temperature on the rate of reaction will be investigated. 2. Determine the activation enthalpy with and without the catalyst ammonium molybdate(VI) and with different protic acids and use this to compare the effectiveness. To find out which catalyst is most effective‚ this aim will be carried out as an iodine clock reaction. The goal of this aim is to find out what catalyst is best to make this reaction occur at the fastest rate. 3. Determine the effects
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MONROE CLOCK COMPANY * Issue: Jim Monroe‚ president of Monroe Clock Company‚ decided to sell a new household timing device. And this complete product would have to be sold through wholesalers and manufacturers’ representatives‚ which were new to Monroe Clock‚ so the price will be an important factor. Jim’s controller‚ Tom‚ had provided figures showing a full cost of $11.60 and factory price of $14.70‚ and Frank Tyler‚ his sales manager‚ had worked out a cost of $6.30 excluding fixed overhead
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An investigation on the activation energy for the iodine clock reaction Introduction: The iodine clock reaction is a presentation of chemical kinetics‚ which are the elements that affect the rate of chemical reactions. When the two colorless solutions are incorporated together‚ no reaction can be spotted. But after a short period of time‚ the solution turns into a dark blue solution. The term rate of reaction is stated as the decrease in the concentration of one of the reactions or the increase
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which non-rational or magical phenomena play a significant part’ (Manlove‚ 1975‚ 1). Following this definition‚ The Cuckoo clock would be classified as a fantasy by several elements in the story. To begin with‚ the story is based on the classic idea of a child communicating with animals or objects. In this case‚ that object would be the wooden cuckoo coming out of the clock. This idea itself is quite a common subject matter for children’s literature. For example in Little Princess‚ the little girl
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Death Clock: Stimulus B. In Greenview the Howth clock stood over the town like a guardian. ‘TICK TOCK TICK TOCK’ it went as it counted the hours‚ minutes and seconds of every day. On the outskirts was the Greenview forest which contained all the memories of our childhood‚ building forts and playing hide and go seek. On the other side of town led to the crusty salty ocean coast which cooled our hot sweaty bodies after a fun afternoon out exploring the forest. This was what life like was before…
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