Why does coke have a "fountain" effect when it meets Mentos?

The gel and resin (called Arabic gum) released by mentos mints after entering the water destroyed the surface tension of cola liquid, destroyed the force between carbon dioxide and water molecules, and released a large amount of carbon dioxide dissolved in cola in an instant, which led to a sudden increase in gas pressure in the cola bottle and eventually an explosion.

Lan Hongqiao, a doctor of chemistry at Xiamen University, explained the principle of this phenomenon to reporters. The gel and resin released by "Mentos" mints after entering water destroy the surface tension of cola liquid. Mints have many tiny pores, which is an ideal place to form carbon dioxide foam. "Mentos" mints contain gum Arabic, which makes the surface tension of water molecules easier to be broken and makes cola release more carbon dioxide at an alarming rate, so it can be sprayed so high. Dr. Lan also said that mints contain many pectin substances, and the pore structure of these substances physically reacts with carbonic acid, which will accelerate the release of carbon dioxide. If you eat these two things at the same time, a lot of carbon dioxide will be released in the stomach, which will increase the burden on the stomach and cause stomach pain, which is not good for your health.

Some mints were thrown into Coca-Cola. A few seconds later, a huge column of coke spewed out of the coke bottle, leaving only half a bottle of coke in the bottle after spraying.