1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Opening a bottle of soda or champagne

  1. Mar 31, 2012 #1
    When we open a bottle of soda or champagne, a white cloud raises briefly. Based on thermodynamics, why does it happen?
  2. jcsd
  3. Mar 31, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The sudden expansion of the bubbles causes adiabatic cooling. (This is allowed thermodynamically because an equalisation of pressures produces more possibilities for how the molecules are distributed, so entropy increases.) It can be enough to cause some water vapour to condense briefly. You might not observe the cloud on a warm dry day.
  4. Apr 1, 2012 #3
    Thanks a lot, I thought the same, but couldn't find a confirmation and you provide me with that one!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Opening a bottle of soda or champagne
  1. Experiment with bottle (Replies: 3)

  2. Force on bottles (Replies: 2)