Why did the bottle with carbon dioxide and water seem to create the sensation on the palm of your hand?

The sensation is suction, meaning the mouth of the glass bottle stuck to my hand. I know it this has something to do with pressure build up from 2 minutes of shaking carbon dioxide gas and water in the bottle, but am not sure exactly why.

Why did the bottle with carbon dioxide and water seem to create the sensation on the palm of your hand?
Carbon dioxide is "soluble" in water. It isn't actually CO2 when it is in water, instead it reacts with water to form carbonate and carbonic acid, which are soluble in water. You know from experience that it helps to agitate water (stir it, shake it, swirl it) when you're trying to dissolve anything in it. I mean, you stir cool-aid to dissolve sugar, don't you? So if you shake the bottle, you'll aid in dissolving the CO2 faster.





The next question is: what is it that creates suction? Well, a vacuum does. So then, what is a vacuum? It is a LACK of atmosphere. When the CO2 goes into the water, you're reducing the pressure inside the bottle by removing the atmosphere. This creates a vacuum, which produces suction against your palm.





So the buildup of pressure inside the bottle is not what creates suction. I can see why you think shaking water and CO2 will build up pressure though, because if you shake a bottle of soda pop, you'll build up great pressure in the bottle. That happens because soda pop has excess CO2 already dissolved in it and shaking the water brings the CO2 out. Shaking non-carbonated water under a CO2 atmosphere dissolves CO2 instead of bringing it out.
Reply:Carbon dixoide will dissolve from the air into the water more readily when shaken, to create carbonic acid. If no new air is allowed into the system, then the pressure of the air inside the bottle will decrease, creating a suction effect