4 Drops Of Hydrochloric Acid Rate Of Reaction Lab Report

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The following methods were taken from Carolina Biological Supply Company by Carolina Biological Supply Company (2012). The first procedure of this experiment is to calibrate the solution. The calibration should reveal the conditions in which the standard reaction should take place completely after 20 seconds. In the top left well of the well plate, place 8 drops of potassium iodide (KI). Add 2 drops of hydrochloric acid (HCl) and 4 drops of starch to the KI solution in the well. Add 4 drops of sodium thiosulfate (Na2S2O3) to the solution in the well. Swirl the solution by moving the well in a small circle. With the syringe, draw up 0.4 mL of hydrogen peroxide (H2O2). Begin timing as the H2O2 is added to the solution. Swirl the solution and…show more content…
In an unused well, place 8 drops of KI. Add 2 drops of HCl and 4 drops of starch to the KI solution. Add the standard number of drops of Na2S2O3 for this experiment. Swirl the solution by moving the well plate in a small circle. Draw up 0.4 mL of H2O2 and add to the solution. Swirl the solution and monitor the color while timing. Record the amount of time it takes for the entire solution to turn a dark blue-black color. Repeat this trial 3 more times while decreasing the concentration of the reactant KI. For the 2nd, 3rd, and 4th trials, use 6 drops of KI with 2 drops of distilled water, 4 drops of KI with 4 drops of distilled water, and 2 drops of KI with 6 drops of distilled water…show more content…
Add 4 drops of HCl, 5 drops of starch, 3 mL of Na2S2O3, and 0.8 mL of H2O2 to each of two test tubes and swirl. Using a mortar and pestle, grind 0.5 g of KI crystals into a powder. Place 0.02 g of the powdered KI crystals into an empty test tube and 0.02 g of the KI crystals into another empty test tube. Pour one of the mixtures of solutions into each test tube with the KI particles. Do not swirl. As soon as the mixture is added, begin timing. Monitor the color and record the amount of time it takes for the solution to turn
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