Rate Of Reaction Lab Report

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Purpose of this lab is to find out how rate of reactions are affected by volume affects and determine which chemical affects the solution rate of reaction. Temperature was also a factor in discovering how it will affect the speed of the reaction. This was done by gathering certain chemicals and mixing them into a test tube then recording how long it took to change color. Temperature was tested by placing the test tube in ice water over a hot plate and slowlying increasing the temperature. Sodium thiosulfate slows the rate of reaction when increased and KI increases the rate of reaction when increased. Temperatures that are lower cause the reaction to be slower compared to when heated up.

Reaction time is an important factor
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The procedure was followed for the solution that used 1ml of Sodium thiosulfate and 2mL of the other chemicals. A 500mL beaker was filled with ice water and a thermometer was placed inside the water to record the temperature. When the temperature reached 2.3 degrees Celsius the solution was placed inside and the KI was then added into the solution. The hot beaker was placed onto the hot plate to slowly increase the temperature until it reached 18.7 degrees Celsius where a new solution was placed inside again. This repeated for 18.7, 35.0, and 51.6 degrees …show more content…
In the experiment the results showed how the reaction time of a reaction can be affected by different variables like temperature and quantity. The hypothesis of the experiment was that Sodium thiosulfate would be the agent that affects the time of the reaction. This was proven partially since the data from figure 3 and figure 1 shows that the higher concentration of Sodium thiosulfate causes the solution to take longer to occur therefore supporting the hypothesis. Data from figure 3 also shows that increasing KI in the solution causes the reaction time to occur faster. The data from figure 2 show that temperature also factors into the time it takes for the color change to occur. In an experiment performed by Qi Wong with the separation of Titanium(IV) from sulfuric acid it showed that temperature affects the rate at which reactions occur where in this case the rate at which titanium could be removed. (1) The results support the hypothesis but more testing could prove if Sodium thiosulfate and Potassium iodide are the only agents that effect the rate of reaction within the experiment. During the experimental section of the lab sources of error were failing to clean materials after being used and failing to add chemicals to the solution. When not enough materials were present during the first part this resulted in

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