If you are still amazed by the Coke+Mentos reaction, wait until you see what happens when you pour some milk into a bottle of Coke.
Coke has an acidic pH between 2.5 and 4.5, and most of you probably know that you can use Coke to take tarnish off of coins and other metal stuff, and some people even use it to degrease car engines. But what happens when we mix Coke with another liquid with a normal pH like milk?
Take a look at the images below, you will find a brief explanation at the end of the post.
Now let’s see what happens when you pour some milk into a bottle of Coke
Close the bottle and forget about if for 6 hours
Here is what the Coke will look like after 6 hours:
Here’s a close up of the top…
… and this is the bottom. It looks like dirty water and sand. Pretty impressive…
Here is the entire process:
Long story short, what basically happens when you mix Coke and milk is a reaction of the Phosphoric Acid contained in the Coke with the milk. Phosphoric Acid molecules attach to the milk giving them more density, this separes these molecules from the rest, while the remaining liquid that makes up milk and Coke becomes lighter and floats on top.
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