Determination of the Reaction Rate of Mg and HCl Alex Skartvedt Alex Skartvedt, Melanie Ho, Christina Olson, Thor Swerdykiak November 11, 2015 Fall 2015 Semester Abstract: The experimental rate law of the reaction: 2HCl(aq)+Mg(s)→MgCl2(aq)+H2(g) is being determined because kinetics play a large role in the reactions happening in everyday life. The rate law, k value will be obtained in the experiment. To obtain the information a pressure probe was connected to an Erlenmeyer flask in
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around the bowl, and it turns in to ball and a gas is given off. Potassium in the most reactive out of all the three as it’s below the other two metals. When potassium is added to water it gives off sparks and light on fire, potassium has a faster reaction. As you go down group 7 the atoms become less reactive.
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Lithium: Lithium is the third element on the periodic table which makes its atomic number three. The symbol that is associated with lithium is Li as shown in the spelling of my first name. The atomic mass of lithium is approximately seven. Since the number of protons and electrons are equal to the atomic number, they equal three for lithium. The number of neutrons in lithium equals four. Lithium is a light, silver-white metal which therefore makes it a solid. After the mineral it is in is heated
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lab report identified different types of reactions in various chemical changes. Through the five experiments completed in class, the creation of bubbles indicating a new gas formed, colour change, and production of light were observed. From reactions A and B, it can be concluded that single displacement reactions are indicated when three elements are present, two of which are of like charges that switch places during the chemical reaction. Both reactions involved an element with a negative charge
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Through my weekly allotted hours in lab, I realized the crucial role the environment plays in bringing about certain chemical reactions. This importance extends far beyond the controlled setting of a college laboratory, in which it seems even the air pressure is finely-tuned. For instance, the tarnished silver of the pendant which sits atop my neck is a pro duct of the metal’s reaction to the moisture and sulfur in the air. Beyond my necklace, I have found this principle to be applicable in many aspects
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al., 1998). It catalyzes the conversion of a large number of catechols producing a dark pigment called melanin, which is the product of the chemical reaction. Studies on enzyme activity are important in order to establish some controls. In particular, with regards to the cathecol oxidase, its inhibition can help to reduce the pigment production and the darkness of some vegetables and fruits. This is obviously
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them all. The precious bonds of atoms hold together all life and all that support it. A good example of how chemical bonds and the reactions that forge said bonds is the reaction of Alka-Seltzer® tablets placed in water. People use these tablets to relieve pain. Which leads to the question; “Does the size of a particle have any affect on the time it takes for a reaction to complete?”. Alka-Seltzer® contain three key ingredients sodium bicarbonate, aspirin, and citric acid. A key component of Alka-Seltzer®
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Each group was successful in gathering results for the different factors and it proves just how much the peroxidase became affected within the testing environments. In terms of the enzyme concentration, both of the different conditions (double and half) resulted with the absorption readings at 470 nm to steadily increase over the course of 5 minutes. This result was caused because there were more enzymes present to react with the two substrates, hydrogen peroxide and guaiacol, therefore affecting
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of oxidizing agents such as oxygen, water, the halogens and carbon dioxide. http://www.lpdlabservices.co.uk/problem_solving/typical_technical_expertise/corrision.php • Corrosion: Corrosion is the gradual destruction of materials by chemical reaction with their environment. Stress Corrosion is evidenced when the metal strength loss resulting from the combined stress and corrosion is greater than the effects of stress and corrosion acting separately. Stress corrosion is generally evidenced a crack
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Discussion: Average concentration of NaOH solution was 4.35 M. There are many sources of error in this experiment as we got some percentage differences in the two different trials. For the Trial 1 and Trial 2, the percentage difference is 3.7 % which is significant difference to be noted. This percentage difference could occur due to many reasons such as not measuring the KHP properly as we got 0.42 g for first trial and 0.4139 g for second trial of KHP for performing titration but it is more than
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