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

Pressure inside a heated sealed vessel

  1. Aug 8, 2015 #1
    Please can you help me de find out the calculation steps leading to the partial pressure inside a heated closed vessel with 25 ml total capacity but filled 20mL with aquous mixture of 2 acids(HNO3/HF ;1/3)..I think to simplify the problem we could at a fisrt approximation assume that the mixture is water.. Experimentally we fixed the temperature to T1=80 ; 100 then 120°C.
  2. jcsd
  3. Aug 8, 2015 #2


    User Avatar
    2017 Award

    Staff: Mentor

    To a good approximation, the partial pressure from water will be given by the vapour/liquid boundary in the phase diagram, add the atmospheric pressure from air if you start the experiment with air inside.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Pressure inside a heated sealed vessel
  1. Packaging seals (Replies: 3)