Oxidation Reduction Experiment: An Oxidation-Reduction Solution

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HYPOTHESIS: Once I pour the baking soda solution on the silver it will remove the tarnish from the silver because aluminum is a more active metal than silver causing the silver sulfide to bond to the aluminum.

PURPOSE: The purpose of this experiment is to observe an oxidation-reduction reaction.

RAW MATERIALS:

aluminum foil

silver tarnished object- ring

Teflon frying pan

Pot to boil 1 quart of water

baking soda

container to measure out 1 quart of water

a tablespoon measure

wooden spoon

pennies

tap water-(source Ogallala Aquifer, treated by the City of Dalhart water department)

tweezers

SAFETY CONSIDERATIONS: Always think about safety first. Keep a rag close by for any water spills. Be extremely careful as you are dealing with HOT water. Keep something (tweezers) close by to handle silver object as the hot water will heat the silver. Remain in a ventilated room in case any odors are produced. Wear goggles or eye protective glasses.

EXPERIMENTAL PROCEDURE:

1. Ventilate the room.

2. Make a baking soda solution by …show more content…

I could not make out the odor as I did not want to keep sniffing in case it was unsafe to continuously smell. In addition, I noticed the process worked faster as I moved the ring against the aluminum with my wooden spoon. Because my ring was covered in a lot of tarnish I allowed it to sit in the solution for about 7 minutes and once the bubbles/fizz was barely noticeable, I took the ring out with my tweezers. Before the baking soda solution cooled, I place two pennies in the solution and observed nothing. I would like to include that I tried other jewelry (apparently they were not true silver) and nothing happened. I also tried to find quarters that were tarnished and learned they are only silver if they were made before 1965 (I use a debit card so I did not have very much change lying

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