There are multiple physical forces at work here. Pick'em out and list them.

You got "gas laws" available from elementary chemistry texts.

You got CO2 dissolved in liquid - escaping (Mole laws, antifreeze effect, or not; suppression of freezing &/or boiling point(s)). Note: When gas leaves a container (beer can, bug spray, fire extinguisher, etc.), it cools the container and what's in it, even though other forces resist temp.change, i.e., freezing due to the solubility of the gas in the water/alcohol fraction, et al of the beer. Heard of "equilibrium", "function" (Fx), "ambient temp."? The frost on the outside comes from atmospheric water (water vapor) collecting and freezing on the cold container. As the system warms up (out of the frig), this ice will melt.

The aforementioned does not claim to be a complete account of what's going on here. I'm tired of it! See ya.

There are multiple physical forces at work here. Pick'em out and list them.

You got "gas laws" available from elementary chemistry texts.

You got $\ce{CO2}$ dissolved in liquid - escaping (Mole laws, antifreeze effect, or not; suppression of freezing &/or boiling point(s)). Note: When gas leaves a container (beer can, bug spray, fire extinguisher, etc.), it cools the container and what's in it, even though other forces resist temperature change, i.e., freezing due to the solubility of the gas in the water/alcohol fraction, et al. of the beer.

Heard of "equilibrium", "function" (Fx), "ambient temp."? The frost on the outside comes from atmospheric water (water vapor) collecting and freezing on the cold container. As the system warms up (out of the frig), this ice will melt.

The aforementioned does not claim to be a complete account of what's going on here.