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The surface of the copper on the pennies are most likely cleaned, because vinegar is too weak of an acid to do anything else. If you were to put a scratched penny into hydrochloric acid would be a different story. The inside zinc of a post 1982 penny would react with the chlorine in the hydrochloric acid and change to an aqueous state, leaving behind the copper plating.

So if you want an answer based on vinegar : nothing besides the penny getting its surface cleaned.

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12y ago
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10y ago

No, vinegar is a too diluted (5-10%) and weak acid (Ka=0.00002), it will only dissolve carbonate- and some oxide- surface corrosion.

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7y ago

The green copper(II) acetate is formed.

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15y ago

It will turn green.

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Q: What happens when copper pennies are soaked in vinegar?
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Related questions

Do all pennies regain their luster?

They are copper and if soaked in vinegar the tarnish will come off and they will shine again.


Why do pennies get shiny after being soaked in vinegar?

Because the chemicals in a penny react with the vinegar


Is a copper penny turning green a chemical change?

You can also turn pennies and some other coins green by letting them sit overnight in a paper towel soaked in vinegar. and if you want to clan pennies to shine, put them in a cup of vinegar and salt dissolved. (I once tried cleaning them with a pinch of kosher salt instead and it dug a hole through the penny! -NOT RECOMENDED!!!)


What happens to a boiled egg after being soaked in alcohol?

Not much, but if you soak it in vinegar the shell will dissolve!


What reaction happens when an egg is soaked in vinegar?

The eggs won't react, it is the vinegar that acts on the egg. The acid in the vinegar will corrode the calcium in the egg shell, causing the egg to become soft, like rubber.


What is to preserve by soaking in vinegar or brine?

Foods soaked in vinegar are pickled, and soaked in salt are salt-cured. Both are means of preserving food. <><><> It is called "pickling"


Are bones bendable?

They are not bendable unless soaked in vinegar.


Does an egg last longer soaked in vinegar or water?

water


What mineral is depleted when bones are soaked in white vinegar?

calcuime


Why doesn't the membranenof an egg get dissolved when soaked in vinegar?

Because when it is soaked in vinegar,the shell is making direct contact with the vinegar;the shell is made from carbonate and will be dissolved by the acid in the vinegar, whereas, the membrane is protein so it takes a lot longer to be affected by the vinegar. The reaction is different so the membrane appears not to be affected.


What happens when an egg is soaked in Gatorade?

If you put the egg in vinegar then put it into Gatorade then the egg looks defalated, red, and very sticky.


Will a vinegar soaked turkey bone became hard if left out for a few days?

yes it will because of the acids in the vinegar