Why does carbonated water keeps it’s gas under pressure and loses it otherwise?

Question

Why does carbonated water keeps it’s gas under pressure and loses it otherwise?

In: Chemistry

Answer 1

Because CO2 doesn’t dissolve well in water at the pressure you and I normally live in. When we make carbonated water for cans or bottles, we shove the CO2 in at very high pressure so that it will be very fizzy. At normal temperatures, only a relatively tiny amount of CO2 actually dissolves into the water.

The fizziness of carbonated water happens specifically *because* the water can’t hold onto the CO2 mixed in with it.