วันจันทร์ที่ 2 มีนาคม พ.ศ. 2558

What happen when you mix coca cola with milk??

Now, there are lots of videos about coca cola fantastic experiments.It’s interesting to find out how coca cola reacts to other elements such as putting Mentos on coca cola, boiling it up, or cleaning toilet with it.
    And here’s another coca cola experiment which can leave you stunned and you might reconsider drinking any soft drinks. Let’s start the experiment now!! 


First, in this experiment, we need only two things; coca cola and milk





Then, we pour milk into a bottle of coca cola carefully. Make sure that the liquid doesn’t overflow the bottle. Now, you can see white floating bubbles on the top of the bottle.


After that, shake the bottle to mix coca cola with milk and see what happen to the solution. Let it sit for few hours.

An hour ago, Oh!! The whole elemental composition of the fizzy drink changes very apparently!


6 hours later, here come the solution that you may change your minds consuming coca cola because it represents how the drink might react with the calcium in your bones since soft drinks have a capacity to give you serious conditions like osteoporosis!

      
     Osteoporosis is a progressive bone disease that is characterized by a decrease in bone mass and density which can lead to an increased risk of fracture. It causes bones to become weak and brittle — so brittle that a fall or even mild stresses like bending over or coughing can cause a fracture.


You might wonder how these two components reacts together to become some kinds of terrible drinks. It’s the reaction of Phosphoric Acid contained in coca cola to the milk. The below equation represents the reaction in this experiment.

3Ca + 2H3PO4 --> Ca3(PO4)2 + 3H2

Phosphoric Acid molecules attach to the calcium to become calcium phosphates which have more density and separate out. Other components in coca cola and milk now float on the top of bottle. The bubbles you have seen are hydrogen gas. The solid matter is basically milk that has been curdled by the addition of the more acidic soda.

Both coca cola and milk are acidic but coca cola is more acidic. Generally, coca cola has a pH around 2.5-4.5 because of the Phosphoric Acid content. Milk has a normal pH of around 6.7

There are some studies to suggest that high Phosphoric Acid in soft drinks can increase more chance for people to become Osteoporosis if he or she isn't getting enough Calcium in their diet. After watching this experiment, do you reconsider drinking any soft drinks??
      


Reference:
http://thehigherlearning.com/2014/05/26/when-you-mix-milk-into-coke-and-let-it-sit-for-a-while-strange-things-start-to-happen-video/


by Chatchai Chirapornchai No.5

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