Thermodynamics questions about beer and carbonation

[millatime19]

Why does, when you hit two beer bottles together (one on top of the other) the bottom one overflows? Now I know that the CO2 is released when the beer hits the bottom of the bottle, causing a jump in pressure, but i really want to know why. I was wondering if anyone knows of any real equations because everything in my undergrad physics book is plainly the first and second laws of thermo.



here is a specific link about what I am talking about.

Im more or less wondering if there is a specific constant for the amount of CO2 that can be released, or other variables like the temperature or volume. I mean I understand all the main points of thermodynamics, I just can't necessarially put an equation together myself...

Thanks guys,

(I am new here, so if there is anything I'm doing incorrectly in these forums, let me know!)


-Millatime19

 

[Aaron Barnard]

When two beer bottles are hit together, the bottom one overflows because the impact causes a sudden increase in pressure inside the bottle, which then causes the gas (CO2) dissolved in the beer to come out of solution. This increase in pressure can be represented mathematically by the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the absolute temperature. As the temperature remains relatively constant, the only variable that changes is the pressure, which increases and causes the CO2 to come out of solution.