You can clean tarnished coins by putting them in Coke. It takes about 12-15 hours for the tarnish to be cleaned. This does take some of surface off and could a coin grade lower. Some of the finer features may disappear.
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It typically takes a few minutes to clean a penny with coke. The acidity of the coke can help dissolve the tarnish on the penny, but you may need to scrub it with a toothbrush for best results.
About a day or two. Im doing a science fair project right now and coke is much faster then other sodas
No, a penny will not dissolve in a bottle of Coke in one week. The acidic nature of Coke is not strong enough to dissolve a metal like copper, which pennies are mostly made of. It may cause some tarnishing or discoloration on the penny, but it will not fully dissolve.
Soaking a penny in soda can take anywhere from a few minutes to a few hours to get it clean, depending on the level of tarnish. It's best to check the penny periodically while soaking to see if it has reached the desired level of cleanliness.
acid
Yes, a penny will eventually rust in apple juice due to the acidic nature of the juice. The combination of moisture and acidity will promote the oxidation of the copper in the penny, leading to the formation of rust over time.
To clean a penny, you can soak it in a mixture of vinegar and salt, or use a mild abrasive like a paste made from baking soda and water. Gently rub the penny with your chosen cleaning solution and then rinse it thoroughly with water. Avoid using harsh chemicals or scrubbing too hard to prevent damaging the coin.