Why does vinegar clean pennies?

Copper oxide dissolves in water, but it usually takes a long time. The combination of vinegar (a weak solution of acetic acid), and table salt (sodium chloride) helps to dissolve the copper oxide, and also forms the blue copper(II) ion, which is soluble in water. The penny becomes shiny again!
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What happens when you put pennies in vinegar?

When you place the pennies in the salt and vinegar solution, the acetic acid from the vinegar dissolves the copper oxide, leaving behind shiny clean pennies. The copper from the copper oxide stays in the liquid. You could use other acids instead of vinegar, like lemon juice.
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Why does vinegar clean coins the best?

Why did the vinegar and salt clean the pennies? Copper oxide dissolves in a mixture of weak acid and table salt-and vinegar is an acid. You could also clean your pennies with salt and lemon juice or orange juice, because those juices are acids, too.
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Does vinegar damage copper coins?

Copper coins often turn a muddled brown color, and these marks can be cleaned off with salt and a mild acid like white vinegar. Use a stronger acid like ketchup or cola to strip away the green patina that forms when copper is exposed to salt and water.
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Does water or vinegar clean a penny better?

We took them out and wiped each one off on a paper towel. You can see the surface of the pennies change and become shinier. You can then rinse them with running water and set them on a towel to dry. Vinegar and lemon juice both work really well for cleaning pennies.
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Clean pennies with Vinegar and Salt



Can you leave pennies in vinegar too long?

Don't soak the pennies for too long.

After a few minutes, the same reaction that dissolves stuck-on grime can begin to eat away at the copper. This may cause the pennies to give off an odd metallic residue, staining your hands or the container they're in.
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How long can I leave pennies in vinegar?

A common ingredient in DIY eco-friendly cleaners, the acetic acid in white vinegar can help wear away the contamination on your coins. Soak your coins in a glass or other non-corrosive container for at least 30 minutes, up to overnight, and then wipe with a clean cloth or scrub gently with an old toothbrush.
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How long can you leave copper in vinegar?

Place all your copper and brass in the bucket. Add a tablespoon of table salt. Add enough white vinegar to cover your metal. Give the bucket a light shake, and let your bucket stand for about 20 minutes.
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How do you clean pennies without losing value?

Take the coins out and sprinkle some baking soda over them; then use a soft-bristled toothbrush to brush them clean. Rinse them out thoroughly with hot water; using tongs or gloves to hold them to avoid burning your fingers. Place them on a soft, cotton towel and leave to air dry.
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Does vinegar eat copper?

You can clean your copper items with the help of household items which may be just within arm's reach. From ketchup to vinegar, these items have two things in common: they are acidic, and they do not scrub or scratch the surface of the copper.
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How much is 10 lbs of copper pennies worth?

One modern US penny weighs 0.088 ounces. That means it would take approximately 1,818 pennies to weigh 10 pounds, which would be worth 18 dollars and 18 cents.
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Does hydrogen peroxide clean coins?

Step-by-Step Walkthrough. First, you will want to remove any dirt or oil from your coin's surface using warm water and soap. Use some hydrogen peroxide solution (1 part water/3 parts hydrogen peroxide) and rub vigorously over both sides of the coin until they are completely clean.
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What cleans a penny the best?

Vinegar (or Lemon Juice) and Salt

This method is the best way to clean your pennies, and it will produce a very bright orangey-copper color on your pennies. It does this by using the low levels of acids that are contained naturally in vinegar and lemon juice to remove the patina (brown oxidation) on the penny.
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What should you not put vinegar in?

  • Clothes Iron. Never add vinegar to the tank; it could permanently damage the inside of the appliance. ...
  • Countertops. If you want to keep your stone countertops looking beautiful, don't reach for vinegar. ...
  • Dishwashers. ...
  • Electronic Screens. ...
  • Flooring. ...
  • Knives. ...
  • Ranges. ...
  • Small Appliances.
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Why does ketchup clean pennies the best?

Ketchup contains vinegar, a weak acid, which breaks down the copper oxide on the surface of the penny. The salt in the ketchup goes on to add dissolved chloride ions to the mix. These ions bond with the copper, forming copper chloride. The copper chloride helps the vinegar further break down the copper oxide.
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How do professionals clean pennies?

These coins are cleaned by using distilled water with a small amount of detergent in a special vibrating container. Acid based cleaners will eat away at a coin's surface diminishing its value.
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How much is a 1943 steel penny worth?

1943 Steel Wheat Penny Worth a Million Dollars

In reference to the current NGC price guide, a 1943 wheat penny in a circulated condition is valued at $0.05 to $1.25. A mint state-certified steel wheat penny could fetch up to $10 at an auction.
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What is a 1944 penny worth?

According to the NGC Price Guide, as of February 2023, a Wheat Penny from 1944 in circulated condition is worth between $7500 and $33500. However, on the open market 1944 STEEL Pennies in pristine, uncirculated condition sell for as much as $200000.
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What cleans copper the fastest?

Try vinegar or ketchup.

"If you have a large copper item and you want to clean it quickly, boil three cups of water and add a cup of vinegar and one tablespoon or more of salt," says Reichert. Next, stir the mixture until the salt is dissolved and then place the copper item in the water.
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What happens if you leave metal in vinegar too long?

Soak the tool for 12 to 24 hours, depending on level of rust and type of vinegar used. (Sometimes, even just an hour or two will do for small amounts of rust.) After 12 to 24 hours, the worst of the rust will have fallen off and the rest of it will be loose and easy to remove by hand.
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Will vinegar alone clean copper?

The acid in the vinegar will clean copper, some have flour or other ingredients to make a paste to keep the acid on the copper. Ketchup and Lemon juice are also acids and will clean copper and brass.
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Can bacteria grow on vinegar?

Yes, it looks rather grungy and scary, floating on the top of the vinegar like that, but this spongy mass of bacteria is completely harmless.
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Can bacteria survive vinegar?

Studies confirming vinegar's antibacterial properties: Household natural sanitizers like lemon juice and vinegar reduced the number of pathogens to undetectable levels. Vinegar can inhibit growth of and kill some food-borne pathogenic bacteria. Plus, vinegar's bactericidal activity increased with heat!
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Can I spray vinegar in my bed?

Vinegar neutralizes odors. Mixing it with water makes an organic deodorizer, so you don't have to buy chemical sprays that may irritate your allergies. Mix equal portions of water and distilled white vinegar in a spray bottle. Lightly spray the solution over your mattress.
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