Vinegar is a mild acid. It will remove light oils, dirt and tarnish without significant damage to the base metal.
Mostly as I know, lemon juice or vinegar can be used to clean copper pennies. You can let soak in for a while to clean them. Good luck in cleaning them!
Vinegar
apple cider vinegar
yes
the salt will dissolve in the vinegar and the penny will get really clean well if it dirty
vinegar
vinegar is acetic acid so it 'eats' away the coating of the penny cleaning it.
Mostly as I know, lemon juice or vinegar can be used to clean copper pennies. You can let soak in for a while to clean them. Good luck in cleaning them!
There are many items that clean pennies, but when coming to juices that clean pennies, Lemon and Vinegar can be a good choice. Though they aren't cleaning agents the way soaps and detergents are, they can be excellent at cleaning pennies. When you mix them with little salt, they start turning into a gentle acid mixture ideal for taking out stain on pennies. Just place the mixture on a disposable container and soak and wash the pennies in it.
Cleaning coins is generally discouraged by collectors. That said, a mix of white vinegar and table salt is quite effective.
Vinegar cleans copper well, but I don't recommend cleaning rare or collectable coins as it will ruin the value.
Vinegar
This is because vinegar is an acid and acids react with metals and a gass will be produced. so- VINEGAR +PENNIES (COPPER) = GAS
Vinegar is good at cleaning because it is a weak acid.
Vinegar.
vinegar
Because the chemicals in a penny react with the vinegar