ENglish_LabReport - 1 Katherine Gomez ENGL 2100 Lab Report...

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1 Katherine Gomez ENGL 2100 Lab Report Effect of Water Temperature on Rates of Reaction Abstract Many things including temperature affect reaction rates. Other experiments, which motivated this one, have proven this to be true with Alka- seltzer. We however wanted to broaden this experiment with other reactants. We tested sugar, salt, and Tylenol under three different temperatures: 95, 65, and 35 degrees Fahrenheit. We hypothesized that the reaction times for these reactants would be shortest at the 95- degree temperature. We standardized all other factors that affect reaction rates and miscellaneous variables. It resulted that our hypothesis was correct; the 95- degree temperature did induce faster reaction rates. We are not completely sure of our results however because our trial and reactant numbers were small. In order to fix this problem, we would have to increase the numbers of both of them and find a way to keep the temperatures consistent throughout the entire experiment. This being said, this knowledge can be used by a large number of people like those taking medications are cooks. Introduction There are a couple of things that affect a rate of reaction: temperature, catalysts, concentration, surface area, and pressure (Purchon, 2010). The one we are concentrating on is temperature, which is a measurement of heat, a source of energy (Purchon, 2010). As the temperature of a solution increases, the molecules move faster and faster (Purchon, 2010). Because of this, they will collide more frequently, which will cause
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2 more reactions. There can’t be any reactions if the molecules don’t collide. The great thing about temperature is that it not only increases the probability that two reactants will collide, but it also increases the number of collisions between them (Purchon, 2010). This is why the higher the temperature is in a solution, the faster the reaction rate is. Many experiments have been done to test how temperature affects reaction rates (Molnar, 2010). These experiments use Alka- seltzer tablets and water as the molecules to form the solution. Alka- seltzer was preferred for these experiments because the reaction of Alka- seltzer in water is not only visible, but fast as well (Molnar, 2010). These experiments are what motivated this study. The objective of this experiment was to see if warmer water temperatures
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ENglish_LabReport - 1 Katherine Gomez ENGL 2100 Lab Report...

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