Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Oxygen tanks for diving

  1. Jul 19, 2005 #1
    Why do scuba divers need oxygen tanks if air is already dissolved in the water? Why can't they just undissolve the trapped gas like when you shake up a bottle of carbonated soda?
  2. jcsd
  3. Jul 19, 2005 #2


    User Avatar

    Staff: Mentor

    Soda bottle is oversaturated (once opened). Partial pressure of oxygen in water is too low in normal conditions for the oxygen to be easily taken out from the water. But IIRC it is done on the submerged submarines.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook