1. This question explores the following phenomenon - when you shake a carbonated
ID: 963977 • Letter: 1
Question
1. This question explores the following phenomenon - when you shake a carbonated beverage before it is opened it often explodes. (Your own experimental results allowed). a) Does the pressure in the can or bottle change before and after shaking? Explain.
b) What causes the bubbles to form when the can or bottle is opened?
c) When poured into a glass why do the bubbles originate from specific locations on the glass? Is it always the same location each time you fill the glass?
d) Why does a shaken up can or bottle explode when it is opened?
e) Is there anything you can do to limit this from happening?
f) Why does adding Mentos to Coke significantly accelerate this process? If you haven’t seen this reaction there are some good YouTube videos you should watch.
Explanation / Answer
a)
Yes, since there is dissolved gas going to the vapor phase, then it increases th epressure of th econtainer
b)
the bubbles are CO2 which were in solution in the liquid as H2CO3 carbonic acid
c)
bubbles must be formed in deffects of solid, if there are no deffects, then there will be no bubble formation
similar location, since there is imperfections
d)
because the partial pressure inside of the bottle is way much larger than the partial pressure of the ambient, then the change/gradient of pressure is too high, therefore the can "explodes"
e)
Yes, cool won, avoid agitation, use perfect flat containers
f)
Mentos produce even more CO2 from the gas, therefore it is accelerated due to extra carbonation
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