what is the chemical reaction of coke mixed with mentos?

Answer 1

The reaction of Mentos with Diet Coke is not, as some have surmised, a chemical reaction, and no products other than flat Diet Coke, soggy Mentos and carbon dioxide are produced. The reason that the soda erupts so violently from the bottle is actually twofold: a decrease of the surface tension of the soda (due to dissolving Mentos), and an increase in nucleation sites (sites where bubbles of CO2 can form) within the bottle (due to the rough Mentos surface). Both of these factors make the carbon dioxide in the soda less likely to stay dissolved and more likely to become gaseous. The fountain effect is from all of the CO2 going from dissolved to gaseous at once, and at a great rate.

Answer 2

There is no chemical reaction. What you are observing is a phase change from dissolved carbon dioxide to gas. This is caused by the surface of the Mentos being suitable sites to trigger off the formation of bubbles.

Answer 3

THERE IS NO CHEMICAL REACTION

Answer 4

BOOM!