1. Not finding help here? Sign up for a free 30min 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!

Sulphur trioxide

  1. Apr 12, 2008 #1
    Is SO3 soluble in water??

    i know it reacts very exothermically with water to form water soluble products (H2SO4). But is SO3 itself soluble in water?
  2. jcsd
  3. Apr 12, 2008 #2
    of course, which is energetically favourable.
  4. Apr 12, 2008 #3


    User Avatar
    Homework Helper
    Education Advisor
    Gold Member

    Think of it this way: If you heat (but do not try this because it can be extremely dangerous) sulfuric acid enough, it will push sulfur trioxide as a gas out of solution. Think of sulfur trioxide as the anhydrous form of sulfuric acid. Yes, sulfur trioxide is soluble in water.
  5. Apr 14, 2008 #4
    It probably is, but, have you really ever seen a water solution of SO3?
  6. Apr 14, 2008 #5
    noo.... i don't think they have those in high school labs!!
  7. Apr 14, 2008 #6
    Don't know what you intended exactly, but I intended: since SO3 reacts with water instantaneously, how can we see a water solution of it?
  8. Apr 14, 2008 #7
    awwww ok...... lol.... i didn't think of it as sarcastic... i thought there really were solutions of SO3 dissolved in water.

    haha, thnks anyway
  9. Apr 14, 2008 #8
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?