Post on 05-Apr-2018
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Silver & Silver Tarnish
Silver is a beautiful metal. Itsshine, beauty, luster and
attractiveness cannot be
replicated by any other metal. It is
used extensively globally for
making various items, fromjewelry to decorative items to
even silverware for home use.
Over the ages, silver and gold
have gained so much importance
that they have become objects of
desire.
Over a period of time,
you see its beauty
diminishing. You see
the discoloration of you
silver article and feeldisheartened and
distraught. This
discoloration, called
silver tarnish, is a
hindrance. Silver gets
very easily tarnished.
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How can silver tarnish?
O2(g) + 4Ag(s) + 2H2S(s)2Ag2S(s) + 2H2O(l)
Tarnish is formed on the surface of a silver object when silver reacts
with H2S in the air. The product, black silver sulfide, forms the coating
of tarnish on the silver.
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Cleaning Tarnished Silver Start with plain soap
and water. The first thingto do is to wash your
silverware or silver
jewelry with soap and
water to remove any dust
or oils from the surface.
You'll be removing the
tarnish by way of a mildchemical reaction, and
want to wash away
anything that might block
the tarnish from reacting.
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Cleaning Tarnished Silver
Prepare your equipment. The next step is toline a pan with aluminum foil and add enoughwater to completely cover the piece of silver youwant to clean. I used a relatively small pan
because I was cleaning jewelry, but this methodworks just as well for bigger pieces like plattersor kettles, as long as you have a large pot thatwill hold enough water to entirely submerge thepiece.
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Stir baking soda into the water in the pan. Acouple of tablespoons will suffice for small itemsin a small pan, but you may need as much as acup or two for large items in a gallon or more of
water. As the baking soda dissolves, turn on theburner underneath the pan and let the watercome to a boil.
Cleaning Tarnished Silver
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Add tarnished silver. As soon as the
water starts to boil, you can remove thepan from the heat and submerge thesilver in the hot water. Make sure thesilver is in direct contact with thealuminum foil. The whole process can
take several minutes, but it shouldnt belong before you start to see tiny yellowor black flakes in the water, or noticethat the aluminum foil is turning black.Whats happening is that the hot solutionof baking soda and water is separating
the sulfur from the silver and transferringit to the aluminum. This easy homemadetarnish remover takes advantage of thefact that sulfur is more chemicallyattracted to aluminum than silver.
Cleaning Tarnished Silver
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Use tongs to move the silverpieces around in the pan.You can even take it out of thesolution briefly to get a betterlook at your progress. Just be
gentle and avoid scratchingthe silver. Once the silver isclean, you should rinse it inclean water to remove anytraces of baking soda, then dry
it with a soft clean cloth. Youmay find that you can take offeven more tarnish by rubbingat any remaining dark spotswith the cloth.
Cleaning Tarnished Silver
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Cleaning Tarnished Silver
http://leahlefler.hubpages.com/video/How-to-Clean-Silver-with-Homemade-Tarnish-Remover-A-Video-Demonstration7/31/2019 Silver Tarnish
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2Al (s) + 6Ag(s) + 3S(s) +6H2O(l)6Ag
(s) + 2Al (aq) + 6OH + 3H2S(g)
+ 2- 00
3+ -
This reaction is essentially the reverse of the reaction that forms tarnish. Here,
silver ions in the Ag2S tarnish are reduced to silver atoms, while aluminum
atoms in the foil are oxidized to aluminum ions. The tarnish-removing solution
usually includes baking soda to help remove any aluminum oxide coating thatforms and to make the cleaning solution more conductive.
Cleaning Tarnished Silver
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Thank you!!!