Factors and Reaction Rate. The effect of various factors on the rates of reaction. Problem Statement:. What is the effect of factors on the rate of reaction?. Hypothesis:.
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If factors are increased or decreased, then the rate of which a reaction occurs will increase or decrease because a chemical reaction depends on the frequency of the collision between atoms or molecules of the reactants.
The lab entitled The effect of factors on reaction rate, has to do with how various factors such as temperature, surface area, and concentration can increase or decrease the reaction rate. There were three different procedures. The procedures for temperature, was to first measure 100 ml of hot water, cold water, and room temperature water in three 250 ml beakers. The second step was to use three alka-seltzer tablets and add one to the cold water, the second to hot water, and the third to the room temperature water. The third step was to time how long it took for the alka-seltzer to dissolve at the various temperatures and record the time.
The next activity, involved surface area. First step was to place 100 ml of water in 3 different beakers. The second step was to crush one tablet, break a second tablet in eight pieces, and the third tablet remained whole. The last step was to record how long it took for the alka-seltzer tablets at various sizes to dissolve. The various sizes of alka-seltzer represented the independent variable, the dependent variable was the reaction time, and the constant was the amount of water.
The last activity was about concentration. This had to do with how varying the amounts of a substance can affect the reaction rate. The first step was to determine whether or not the baking soda or the vinegar was the constant in the reaction and which was the independent variable. The dependent variable was the reaction time.
Indicate whether or not your hypothesis was supported for all three activities. Explain one activity at a time.
The last part of this paragraph has to do with real-world application and connections. Answer the question. Answer only. How can understanding how fast reaction occurs in the world around us or in industry be beneficial to society as a whole. Give to real-world applications.