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Keep up with all the latest from Marie Osmond More Info. Keep up with all the latest from Jimmy Osmond More Info. Twitter Follow jimmyosmond Jimmy Osmond jimmyosmond. Latest Posts to Osmond. The activation energy for a process like bubble nucleation depends on where the bubble forms. It is highest for bubbles that form in the liquid itself homogeneous nucleation , and lower if the bubble forms on some other surface heterogeneous nucleation.
When the pressure is released from a soda bottle, the bubbles tend to form on the sides of the bottle. But because they are smooth and clean, the activation energy is still relatively high, and the process is slow. The addition of other nucleation sites provides an alternative pathway for the reaction to occur with lower activation energy, much like a catalyst.
For instance dropping grains of salt or sand into the solution lowers the activation energy, and increases the rate of carbon dioxide precipitation. The physical characteristics of Mentos surface roughness, easy dissolution into the liquid, etc.
The nucleation reaction can start with any heterogeneous surface, such as rock salt, but Mentos have been found to work better than most. It has also been shown that a wide variety of beverage additives such as sugars, citric acid, and natural flavors can also enhance fountain heights. Decreased bubble coalescence leads to smaller bubble sizes and greater foaming ability in water.
From Wikipedia, the free encyclopedia. Journal of Chemical Education. Kuntzleman, and Dean J. Mentos in Diet Coke". Naked Eggs and Flying Potatoes. Greenleaf Book Group Press. Retrieved 22 June A Mentos Tribute to Eepybird.
Retrieved 24 July Retrieved 8 November What is really behind this physical reaction? Diet Coke and Mentos MiniMyth". Archived from the original on