Why is lemonade able to clean pennies?

Answer 1

Simply put, coke is acidic on the pH scale. If youv don't remember what the pH scale is, it is a measure of how acidic or alkaline a substance is. Coke is about 3 on the pH scale, making it decently acidic (just so u have a comparison distilled water is 7 on the pH scale which is neutral). In short acid eats away at metals while alkaline eats away at protein. So when calcium and zinc build up on your penny soaking it in coke will eat away at the metals built up, leaving it nice and shiny.

Side note: alkaline pH substances eat away at proteins so that's why we use high alkaline products to clean our sinks and toilets.

Answer 2

because of the phosphoric acid eats away at the corrosion on the penny

and the Pepsi contains the citric acid

Answer 3

yes but not as much as ketchup but cola has enough acid to clean a penny

Answer 4

Because of the acid and carbonation.

Answer 5

Coke has a lot of acid in it.

Answer 6

because of the acid