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Rate of Reaction of Na2S2O3 and Hydrochloric Acid: Lab Experiment

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First, put on safety goggles to protect the eyes from the chemicals used in this experiment. To begin the lab, label one 100-mL beaker “HCl” using a beaker marker and add 30 mL of 1.0 M Hydrochloric acid solution to this beaker. Next, label the other 100-mL beaker “Na2S2O3” and pour 30 mL of 0.30 M Sodium thiosulfate solution. Finally, label the 250-mL beaker “H2O” and add 25 mL of Distilled or deionized water into this beaker. After all the beakers have been labeled and filled with their set solutions, place a sheet of white paper underneath the six-well reaction plate and using the black sharpie, draw a “X” under each of the wells. Before beginning the lab, place the six-well reaction plate over the sheet and verify that the six “X’s” can be seen through the plate.…show more content…
Make sure that there are no air bubbles in the syringe as that will affect the results of the experiment. After it is checked to make sure there are no air bubbles empty the syringe into Well #1 of the six-well reaction plate. For Well #2, submerge the 5-mL syringe in the 100-mL beaker labeled “Na2S2O3” (be sure that the syringes are not being mixed in different syringes) and draw 1.5 mL of the Na2S2O3 solution into the syringe. Then, fill the 5-mL syringe up to the 1.5-mL mark with distilled or deionized water by submerging the syringe in the 250-mL labeled “water” beaker by drawing water into the syringe. For Well #3, fill the 5-mL syringe up to the 2-mL mark with distilled or deionized water by submerging the syringe in the 250-mL labeled “water” beaker by drawing water into the syringe. Next, submerge the next 5-mL syringe in the 100-mL beaker labeled “Na2S2O3” and draw 1 mL of the Na2S2O3 solution into the syringe. Empty both solutions into Well #3 of the six-well reaction
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