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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 n.net/ebooks/wsug 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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