Factors affecting reaction rates lab. 5_1 Factors Affecting Reaction Rates Lab Report Dr. Z blog.sigma-systems.com 2023-01-01

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CHM 101L M5 Factors Affecting Reaction Rates Lab blog.sigma-systems.com

factors affecting reaction rates lab

If it took more than 18 — 22 seconds, repeat the steps 1 — 10 but now using 1 less drop of Na 2 S 2 O 3 solution 13. Apparatus and Chemicals… Rate Law Lab The purpose of this experiment was to determine the rate law graphically from the rate of disappearance and the x y values also the specific rate constant k. Set up 2 test tubes in the test tube rack and put about 5mL of 1M hydrochloric acid in one and 3M hydrochloric acid in the other. Concentration: a The reaction rate increases as the concentration of the reaction increases, same as lab result. M to dissolve the metal, and this happened because with the higher concentration, you have more collisions, and with more collisions the reaction happens faster.

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Factors Affecting Rate of a Reaction, Chemistry Design Lab

factors affecting reaction rates lab

Room temperature water 8. Iron III chloride FeCl3 11. I would double check the temperature of the water and try to finish the experiment as fast as possible to prevent temperature change. As the temperature increases, the reaction rate increases due to higher number of collisions 3. Add 5 drops of the following catalysts to different test tubes: a.

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Factors Affecting Reaction Rates blog.sigma-systems.com

factors affecting reaction rates lab

Record the number of drops of Na 2 S 2 O 3 solution is used to achieve approximately 20 second change in Data Table 1 Data Data Table 1 Trial Na 2 S 2 O 3 Drops Reaction time sec 1 8 19. The independent variable is the surface area of the tablets; the dependent variable is the rate that the tablet to dissolve in water and the controlled variables are the amount of water, temperature of water, and the amount of Alka Seltzer tablet 1 tablet each. From the data, we can determine that the larger the surface area is, the higher the rate of the chemical reaction will be. Theoretically slivers should have come first because it has more surface area. Continue to repeat step 12, of reducing the number of drops of Na 2 S 2 O 3 solution by 1 till it takes approximately 18 — 22 seconds for the solution to appear dark blue 14.

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Factors Affecting Reaction Rate Lab Report Assignment free sample

factors affecting reaction rates lab

This hypothesis was made according to the information we researched: The greater concentration of reactant atoms and molecules present, the greater chance that collisions among them will occur. Transparent and nothing happened. Part 3 According to the result and graph of part3, the time Alka Seltzer Tablet uses to dissolve water decreases as the surface of the tablet increases and increases as the surface area of the tablet decreases. This hypothesis was made according to the information we found in the textbook: Increasing the temperature of the reactants can cause the particles to move more quickly. This aim will find out the effect of ethanol by carrying out the iodine clock reaction with and without ethanol present and the results will be compared to draw a conclusion.

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Factors Affecting Reaction Rates Lab Report .pdf

factors affecting reaction rates lab

Record how fast each reaction occurred. Mix this solution by swirling the entire plate gently 7. We also controlled the amount of water and the amount of tablets. Procedure By keeping a constant throughout the experiment we can see the effects of each concentration on the experiment and use the different reaction time an rate values to see how the reaction changes under different circumstances Experimental Data We are told to use 8 drops of NaS2O3 solution as our reaction constant and given tables with the different concentration of the other reactants for each trial and table. Conclusion After performing experiments on how different factors affect reaction rate.


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Free Essay: factors effecting reaction rates (chem lab)

factors affecting reaction rates lab

. If we add a catalyst to this reaction, we will increase the reaction rate, thus causing the reaction to speed up. Additionally by performing essentially the same experiments but with temperature changes one can determine how k is affected by temperature changes and the new activation energy. For Part 3, we predicted that the more surface area the reactants have, the higher the rate of the chemical reaction will be. Part 4 According to the table of part4, the time hydrogen peroxide takes to decompose was the shortest when NaCl is put in, however the changes were subtle, the reaction was very hard to tell. Repeat step 2 for the other test tube. Because particles have to collide to react successfully, so an increase in concentration of produces makes more collisions.

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Discussion

factors affecting reaction rates lab

Set up 4 test tubes in the test tube rack with 5mL of 0. We made sure that the time were accurate and no other substances were added to the reactants. In this experiment, particle size, temperature, concentration of a solution, and catalysts will be tested to determine how they influence the rate of reaction. The results does correspond to the theory. The catalyst test was inconclusive.

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Factors Affecting Reaction Rates

factors affecting reaction rates lab

Mix the solution again by swirling and monitor the colour 10. Transparent and nothing happened. When the zinc was placed in the 1M hydrochloric acid, it took 4 minutes to react. This is because this is near freezing and molecules are moving very slowly and there are very little collisions happening, so there is a slow reaction. In our experiments, A whole piece of Alka Seltzer Tablet took averagely 56 sec to dissolve completely in water, took 45 sec when it was broken into four pieces and took 33 sec when it was crushed into powder. In our experiment, three different catalyst increased the rate to different degrees.

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5_1 Factors Affecting Reaction Rates Lab Report Dr. Z blog.sigma-systems.com

factors affecting reaction rates lab

Record the reaction rates in the table. Variables: Independent Variable: Concentration. If I repeated the project, I would test some of other c atalysts and their effects to th e rate of reaction. Instead of using the burner to heat the water, we had to rely on taps to produce three different temperatures of water. The data collected will then be used to calculate the rate law for the iodine-clock reaction.

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Factors Affecting Reaction Rates

factors affecting reaction rates lab

The independent variable is temperature of the water and the dependent variable is the time for tablet to dissolve completely. The changing concentrations of Potassium Iodide. There was a high possibility of that hydrogen peroxide didn't have a complete decomposition, which means that NaCl is not a very effective catalyst. The possibility for error is small. Part 2 In Part 2, three beakers were filled with HCl with different concentration.

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