Does Water Or Vinegar Clean A Penny Better Experiment?

Does vinegar and salt make hydrochloric acid?

In beaker # 4, when you mix the vinegar and salt, you make hydrochloric acid.

This dissolves the copper compound.

When salt is added to the vinegar, it is able to clean the pennies..

Why do pennies turn green in vinegar?

A penny is made of copper. The vinegar on the paper towel helps the copper in the penny easily react with the oxygen in the air to form a blue-green colored compound called malachite.

What happens when you soak a penny in vinegar?

When you put your dirty pennies in the vinegar and salt, the copper oxide and some of the copper dissolve in the water. That means some copper atoms leave the penny and start floating around in the liquid. … So you’ve got positively charged iron ions floating in your vinegar with the positively charged copper ions.

What does vinegar do to copper?

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!

What is the best liquid to clean a penny?

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.

Why does lemon juice clean pennies better than vinegar?

Vinegar has a pH level of 3.0, while lemon juice has a pH level of 2.3. … This means that lemon juice is a slightly stronger acid than vinegar. The stronger the acid, the better it will clean copper pennies.

Is cleaning a penny with vinegar a chemical reaction?

It takes a chemical reaction! The acetic acid in the vinegar reacts with the copper oxide and dissolves it. We sprinkled salt over the pennies, and then used a dropper to coat them with vinegar. We rubbed the pennies a little with the salt, and they were shiny again!

What cleans a penny better experiment?

What You’ll DoGuess which liquid will make a penny shine.Set one penny aside. … In one cup, pour enough vinegar to cover the penny.In the other cup, pour enough liquid soap to cover the penny.Wait at least ten minutes.Remove the pennies, rinse them in water, and rub them with a paper towel.Compare all three pennies.Apr 13, 2016

Will vinegar damage coins?

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.

Will Coke clean a penny?

Coke and off-brand colas will quickly remove the tarnish. Just don’t drink the coke afterward. Coke contains phosphoric acid that cleans the oxides. Try a variety of citrus juices to see which works best or simply let your pennies soak in lemon juice.

What household items can clean pennies?

For many pennies, one tablespoon (15 g) of salt in 1/2 cup (4 oz) of vinegar will get the job done. Stir the mixture to dissolve the salt. If you don’t have vinegar, use lemon or even orange juice. Copper oxide (the gunk on your pennies) dissolves in weak acid, and that’s just what all three of these liquids are.

How do professionals clean coins?

Pour your distilled white vinegar into your shallow bowl. There should be enough vinegar to completely cover your coins. Gently place your coin or coins into the vinegar. Let your coins sit for at least 30 minutes.

Is a 1964 penny worth anything?

Circulated 1964 pennies with no errors or special varieties are worth approximately 2 cents. As you can see, the 1964 Lincoln penny was struck by the billions upon billions. Virtually all of these pennies went into circulation and can still be found in your pocket change.

Does it devalue coins to clean them?

So what is the best way to clean old coins? … It is best not to clean rare coins as removing the patina can significantly reduce the value of them. For this reason, most coin hobbyists almost never clean their coins. In fact, 99% of coins do not increase in value after you clean them, but many will be greatly devalued.

Are wheat pennies worth anything?

Most wheat cents (wheat pennies were minted between 1909 and 1956) are worth about 4 to 5 cents. Those in better condition can have double-digit value. Special examples (especially those in near perfect condition) can be worth much more. … And pennies dated from 1879 to 1909 are worth at least $1.

Does vinegar harm copper?

Acidic substances react with the surface of copper, causing it to tarnish and corrode almost instantly. This corrosion is highly soluble, leading to the presence of toxic copper salts in the food. This is why it is not recommended to use copper vessels for foods high in acidity, such as milk, wine, or vinegar.

What is the best chemical to clean copper?

What are the Best Chemicals to Clean CopperCitric acid- Citric acid is an organic acid which is used to clean copper. … Acetic acid- This is perhaps one of the most commonly used materials to clean copper. … Acetone- Acetone is an organic compound which is commonly used as a solvent.More items…•Aug 1, 2017

How do you clean dirty coins fast?

Follow These Steps:In a jar, combine one cup vinegar (or lemon juice) and 1 tablespoon salt. … Pour the solution into the plastic container. … Add the coins in a single layer, so none of the coins are touching. … When you remove the coins and wipe them with a cloth or paper towel, they should look shiny.More items…•Feb 5, 2020

How do you tell if a coin has been cleaned?

A cleaned coin will have a dull, bright look – one that on a well-circulated coin would seem unnatural. Old pennies that have been worn should not look bright orange and have flashy surfaces. Old, worn pennies should be medium to dark brown in color and have virtually no reflectivity on the surface at all.

How do you remove green corrosion from copper?

For signification corrosion on the copper, make a paste of equal parts vinegar, flour and salt. Rub it all over the affected area and allow it to sit for about 30 minutes. Once the paste has sat for a while on the affected metal, wipe it clean with soapy water and dry it well.

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