Lab 13 - Redox Reactions

1 m cuno32 in covered plastic container 100 ml 01 m

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Unformatted text preview: L tap water Part B: Half-Cell Potentials 5 x 100 mL 0.1 M Cu(NO3)2 (in covered plastic container) 100 mL 0.1 M AgNO3 (in covered plastic container) www.webassig encheml1/lab_13/manual.html 5/10 4/15/13 Lab 13 - Redox Reactions 100 mL 0.1 M Pb(NO3)2 (in covered plastic container) 100 mL 0.1 M Zn(NO3)2 (in covered plastic container) 5 x ~3" copper wire ~3" silver wire ~3" lead wire ~3" zinc wire Safety The potassium permanganate solution (KMnO4) is a strong oxidizing agent; it is also acidic and corrosive. The solution of 3M HCl is acidic and corrosive. Both solutions can attack the skin and cause permanent damage to the eyes. If either of these solutions splashes into your eyes, use the eyewash immediately. Hold your eyes open and flush with water. If contact with skin or clothing occurs, flush the affected area with water. Have your lab partner notify your instructor about the spill. 3M HCl gives off acidic and irritating vapors. Add it carefully to your beakers in the fume hood on the side shelf. Avoid inhaling the vapors. The reducing agents produce hydrogen gas when exposed to water and/or acid. Keep the reactions away from ignition sources, and rinse acid off metal before discarding it. Do not tightly cap the waste container. As with all labs, be sure to wash your hands thoroughly after handling any chemicals and avoid touching your eyes and mouth during lab. Waste Disposal The solutions from Part A1 of the experiment should be rinsed into the waste container for oxidizing agents. There will be a funnel in the container. Pour the contents of the well plate into the funnel, and then rinse the plate with water from a squeeze bottle. The metals from Part A2 of the experiment should be removed from the reactions with forceps, rinsed with water if they have been exposed to acid, blotted to remove excess water, and then discarded in the container for used metals. Do not tightly cap this container; hydrogen gas could build up pressure in it. All liquid waste should be put into the large waste container designated by your instructor. There is no waste for Part B of the experiment. Prior to Class Please complete WebAssign prelab assignment. Check your WebAssign Account for due dates. Students who do not complete the WebAs...
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This document was uploaded on 01/22/2014.

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