Question

You take a soda bottle from your refrigerator. As you open the cap you hear a “fizzst” sound. Upon removing the cap soda suds spill out over the top making a big mess. (You take a soda bottle from your refrigerator. As you open the cap you hear a “fizzst” sound. Upon removing the cap soda suds spill out over the top making a big mess. (Hint: Soda is bottled with about 4 atm of CO2)
a)   Rationalize what happened? ;Why the “fizzst” sound, why the mess?
b)   Would the problem been lessened or worse if the soda had been at room temperature?
c)   Why would shaking the bottle before opening making for a more violent overflow of suds?

Answer 1

a)

the sound is CO2 gas escaping from the high pressurized system to the lw pressure system (ambient)

The mess is carried out due to the "mechanical explosion" of CO2 going from liquid to gas

b)

solubility of CO2 decreases as Temerature increases, therefore, if we let this to be at T = 25°C will be even worse, since the solubility of CO2 is less, meaning CO2 is willing to go to the air faster/more qantity

c)

shaking increases bubble formation, which favours CO2 in solution formation into gas