Absorptivity of Bentonite Clay Final Project CHEM 112-501 Melissa Cisneros* Danielle Salo The purpose of this experiment was to test the absorptivity of Bentonite clay, charcoal, and another type of clay. Bentonite clay as well as charcoal can be used as a means of removing pollutants such as Polycyclic Aromatic Hydrocarbons (PAHs) from water sources. Materials and Methods: Materials used in this experiment were 600 mL beaker, 250 mL Erlenmeyer flask, 50 mL graduated cylinder, ring stand and clamp, thermometer, hot plate, tongs, pipet, spatula, centrifuge tubes, a centrifuge, cuvettes, and a spectrophotometer. Chemicals used were FeCl3 Anhydrous, FeSO4- 7H2O, Bentonite clay, 2.5 M NaOH solution, and Procion Red MX-5. To make the clay, 250 mL of distilled water was heated in a 600 mL beaker to 70° to be used as a hot water bath for the Erlenmeyer flask.
Set min temperature to 15-18C c. Time should range from 0-250 seconds 7. Press DISPLAY to accept all values 8. Heat up 200mL of water in a microwave for about two minutes 9. Place hot water on a hot plate to keep warm 10. Nest one Styrofoam cup in another 11.
The beaker was then moved to a stir plate with a stir bar and held in place by a ring stand. A funnel attached to an aspirator hose was fixed above to serve as a fume hood. With the aspirator and stir plate both on, 4.79 mL of 6 M HNO3 was added slowly to the beaker until the copper dissolved and the solution turned a light blue color. The hood could now be removed and 10.02 mL of distilled water was added to the solution. While stirring, 6 M NaOH was added drop-wise until the solution became basic, turning red litmus paper blue.
Heat the beaker on a hot plate set to medium. (Setting 4). Stir with a glass-stirring rod while heating. When a solid appears, stop heating. 8.
Observing Changes – Materials & Procedures Materials Water Copper (II) sulphate (Powder) Copper (II) sulphate solution Iron nail Sodium carbonate Hydrochloric acid Magnesium ribbon Flame (candle) Sugar Aluminum foil Test tubes Test tube rack Tongs Medicine dropper Spoons Beakers Safety goggles Scoopulas Procedures Water and Copper (II) Sulphate Procedure 1. Add a small amount of solid copper (II) sulphate to a test tube with a scoopula. Record the physical properties. 2. Write a hypothesis on what you think will happen when water is added.
-Get six wooden splints that have been soaked in water. -Place them in the beaker half filled with water to continue soaking at your lab station. -Fill a second 250-mL beaker about half-full with tap water. Label this beaker “rinse water.” -Light the Bunsen burner. -Take one of the wooden splints and dip the soaked end in one of the metallic salts,
Add 1 mL of deionized water to the small test tube containing the precipitate and mix it and centrifuge it for 60 seconds. Then, add the supernatant into the boiling test tube and repeat this step one more time with another 1 mL of deionized water. Acquire a pair of metal test tube holders and heat the boiling test tube to evaporate the water for 15 minutes. Let is cool after and weigh it. Then, calculate a percent yield of zinc iodide and write a balanced chemical equation and determine the limiting
Then weigh the crucible without the hydrate after heating. Record both masses. Next, add CoCl2 ∙6H2O and weigh the crucible. Now place the hydrate and crucible on the hot plate. Observe the color change while it is being heated.
We utilized crucibles, crucible lids, clay triangle and the technique of bending down the edges of the triangle. This setup allowed us to expose Epsom salt to high heat in a vessel designed for high temperature exposure. Reagents. We used a small carton of Epsom salt provided by the stockroom and a large blue bag of Epsom salt provided by the instructor. Safety Considerations.
Eggshell Titration Lab Report LIU-1 Mr. Silva Beko Liu February 25, 2012 Purpose: Eggshells are composed in part of calcium carbonate. Calcium carbonate reacts with an acid to produce carbon dio xide, water, and a salt. The calcium carbonate in the sample eggshell will be determined by means of an acid/base back-titration. Procedure: 1.Wash an empty eggshell with distilled water and carefully peel all the membranes from its inside. Place all of the shell in premassed breaker and dry the shell in the drying oven at 110 degree Celsius.