acids that clean pennies

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What is the Best Way to Clean Pennies?
May 21, 2012 . One of the easiest and most common ways to clean pennies is to wash them in a mixture of water, salt, and a mild acid. The first thing to do in .
http://www.wisegeek.com/what-is-the-best-way-to-clean-pennies.htm

Miami Museum of Science-The pH Factor/Cleaning Pennies
Does an acid or a base clean pennies better? Students clean pennies with acidic and basic solutions to determine which cleans copper better. This activity .
http://www.miamisci.org/ph/lpexpand1.html

Why do you clean pennies with salt and vinegar
The salt and vinegar create an acid solution that causes the copper oxide to dissolve off the coins. Once they are clean they should have their original shiny coat.
http://wiki.answers.com/Q/Why_do_you_clean_pennies_with_salt_and_vinegar

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      Clean Pennies with Vinegar - Science Bob
      It turns out that vinegar is an acid, and the acid in the vinegar reacts with the salt to remove what chemists call copper oxide which was making your pennies dull.
      http://www.sciencebob.com/experiments/pennychem.php

      How to Clean Copper Coins in Seconds (with pictures) - wikiHow
      Jul 8, 2012 . How to Clean Copper Coins in Seconds. Brighten old, dark pennies in seconds! . Add enough acetic acid (vinegar, white vinegar is most .
      http://www.wikihow.com/Clean-Copper-Coins-in-Seconds

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      Cleaning silver coins
      Let me start by saying this: If you buy uncleaned coins, you will have very, VERY few chances to clean high grade silver coins. You may find . The mild acid in the lemon juice will help to soften the dirt, and make it easier to remove. After using .
      http://www.celatorsart.com/clean_silver.html

    • 3

      Clean Pennies
      Oct 27, 2004 . Dirty pennies; Clean Pennies data sheet (pdf); Safety goggles; Cups; Salt . are combined, they form a very small amount of hydrochloric acid.
      http://www.uen.org/Lessonplan/preview?LPid=11258

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Cleaning Pennies
Cleaning a penny is primarily using an acid to remove the oxide layer from the surface of the coin along with a tiny amount of other dirt or soils. The acid also .
http://www.finishing.com/69/98.shtml

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