Can a can of soda be shaken hard enough that it will explode?
Yes, but not how you think. First off, the fizzing is not a chemical reaction in the sense of needing reactants like air. It’s purely a result of the process of dissolving gas in a liquid. Shaking the can disturbs delicate balance and causes gas to “undissolve” and form bubbles. These bubbles are less dense than the soda, so try to expand. If the container is open and there’s liquid between the bubble and the open air, the bubble will push the liquid out in its attempt to expand and reach equilibrium with atmospheric pressure. Leave a shaken can alone for about 15 seconds, though, and most of the gas will settle down and re-dissolve (modern cans are designed to reduce the re-dissolve time, with less places for bubbles to get trapped). Even if all the gas in the can or bottle came out of solution at once, however, it would not explode the container unless there was some defect, like a deep scratch in the outer surface or something. So you can’t shake a can hard enough that just the un-d
