* Then label each test tube, 1-6. Using the Data table, make each solution. * Use the pipet to carefully fill each of the cuvettes with the solutions; making sure the outside is completely dry. * Test each of the cuvettes in the colorimeter to get the absorbance, and record your findings. * After each solution has been tested, fill the reaming cuvette with the unknown (Gatorade) and test the absorbance and record your findings.
Add two drops of food coloring to the beaker of distilled water and mix thoroughly. Measure out a dropperful of bleach into a plastic pipet and set it aside until Step 8. 6. Calibrate the colorimeter a. Prepare a blank by filling an empty cuvette ¾ full with distilled water.
Define also the overall order of a reaction and describe how it’s found. Explain how the iodine clock reaction works and the method it employs to find the order of a reaction with respect to a particular reactant. Experimental: Apparatus: 3 -100 cm3 beakers, 1 thermometer, 0-100 0C, 8 burettes with beakers and funnel for filling, clamps and stands, stop clock or watch. Reagents: Potassium peroxodisulphate (VI) solution [0.100 mol dm-3 and 0.050 mol dm-3 K2S2 O8], Potassium iodide solution, [0.500, mol dm-3 and 0.250 moldm-3, KI], Sodium thiosulphate solution, [0.010 mol dm-3 Na2S2O3], Starch solution, 0.2% Procedure: 1. Using a burette, run 5.0 cm3 of 0.100 mol dm-3 peroxodisulphate solution into a 100 cm3 beaker.
Conclusion: The purpose of this experiment is about the synthesis and characterization of aspirin. Salicylic acid and acetic anhydride will be mixed to produce acetylsalicylic acid and acetic acid. The catalyst is H3PO4. After crystallization, the aspirin was filtered using a vacuum filtration system and dried in an oven. A melting point will be ran on the aspirin when completely dry.
Fill the clean, dry cup to the top with the freshly obtained mud sample to be weighed. Place the lid on the cup and set it with a gentle twisting motion. Be sure that some mud is expelled through the hole in the cap as this will ensure the cup is full and also will free any trapped air or gas. Cover the hole in the lid with a finger and wash all mud from the outside of the cup and arm. Then thoroughly dry the entire balance.
If contact occurs, wash the contacted area immediately with cool water. Add 2 drops of acetone to tube 1,2 drops of butyraldehyde to tube 2, 2 drops of flavoring agent to tube 3, 2 drops of your unknown to tube 4. Mix well by agitationand noth the almost instantaneous formation of precipitate in tubes 1 and 2. Record all your observations for samples in table 20.1. B. Tollens Reagent.
Stir very slowly with a stirring rod and record the highest temperature reached by the water in Data Table 2. 10. Remove the calorimeter lid, retrieve and dry the metal. Return metal to its original place. Pour the water down the sing.