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Solvation of gas in soda

  1. Sep 30, 2004 #1
    Solvation of gas in soda....

    Why does warm soda fizz while cold soda does not?

    I have been told that it is due to the solubility of the solvent which fluctues with temperature.


    But why is CO2 LESS solubile in soda/beer/ (WATER) as the temperature increases. It most instances i have seen in chem lab as the temperature of a solution increase its able to solvate molecues also increases. This is the oppisite of what I have been told about warm soda.

    Can some one please explain to me what why sodas fizz when they are warm would greatly appreate it.(^0^.........diethyl ether)





    ^0
     
  2. jcsd
  3. Oct 1, 2004 #2

    chem_tr

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    Dear friend,

    Gases tend to be less soluble in higher temperature, since their vapor pressure increases with increasing temperature. There is an inveresly proportional relationship between solubility of gases in liquids and the temperature of the medium (liquid).
     
  4. Oct 1, 2004 #3
    Ohh yeah.....duh!!! So the gas aquires more energy thus it has enough energy to excape from the solution :yuck:
     
  5. Oct 1, 2004 #4

    Bystander

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    --- with the exception of He in water, and probably a couple other odd actors.

    Keep in mind that solubility depends upon enthalpy AND entropy changes in the solution process. Intuitive generalizations based on trends in either function alone can lead you astray.
     
  6. Oct 3, 2004 #5

    chem_tr

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    You are right, Bystander. Generalizations may sometimes be dangerous, I agree with you.
     
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