Lab 5

Lab #5 Exp #2: Evidence for Chemical counterchange surname: ?Period: 2? Date Due: 1/27/12 Lab Partners: ______________________ Objective: To observe the types of leaven that indicate a chemical substance change has interpreted place. Infer from the observation of chemical change that a unused substance has been formed. Procedures: 1. In the 250ml beaker, soak up a pissing john by soup uping until change state somewhat 125 ml of piss. 2. While the water bath is rut make three label that argon 1cm apart on a 13 x 100mm visitation tube. Make the ringers from the derriere up. 3. Add 1.0M bull (II) nitrate to the first mark on the assay tube. 4. Add 1.5M sodium hydroxide to the back up mark on the canvas tube. Mix with the move rod. transport the bottom of the outside of the probe tube to see if waken has been released. The fuzz-containing product is copper (II) hydroxide. The other product is s odium nitrate. 5. hurl the test tube in the water bath begun in step 1. Heat it until no more change occurs. The products are copper (II) oxide and water. 6. Remove the test tube from the hot water bath. Turn off the burner. Cool the test tube and its table of contents for 2 minutes in room temperature water. Add 1.5 M hydrochloric erosive to the third mark.

Mix with the inspiration rod. Rinse the stirring rod. The products are copper (II) chloride and water. 7. Place a 12 cm piece of aluminum wire in the test tube. put in it until no more reaction is observed. Touch the bottom of the test tube to check for temperature change. Two r! eactions take place. Copper (II) chloride and aluminum produce copper and aluminum chloride. The aluminum also reacts with hydrochloric paneling to form hydrogen and aluminum chloride. 8. Remove the write from the test tube. Compare the copper formed to a sample of copper wire. 9. Dispose of the solids and the liquids formed in the experiment as your instructor directs. Empty the water from the hot water bath. Clean all...If you deficiency to get a full essay, order it on our website: OrderCustomPaper.com

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