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

Is concentrated HCl (12M) a liquid and a gas?

  1. May 27, 2016 #1
    I just remembered that in my lab from a few months ago, the 12M HCl we used was "evaporating" or producing gas, similar to dry ice in water but no where near as much vapor. I'm just curious, is concentrated HCl usually like that or was the acid contaminated?
  2. jcsd
  3. May 27, 2016 #2


    User Avatar

    Staff: Mentor

    "Is concentrated HCl (12M) a liquid and a gas?" Neither, its a solution.:wink:

    All liquids, even much below the boiling point, will be combined with a vapor phase, where molecules will go into the surrounding gas (although in many cases the vapor pressure can be quite low).

    With concentrated hydrochloric acid, you end up with nasty acid fumes that you should not breathe. They can do serious damage to the respiratory system.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted