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

Difference between liquid HCl and a solution of HCl

  1. Dec 28, 2016 #1
    I know that HCl is a compound whose 1 molecule is composed of 1 hydrogen and 1 chlorine atom bonded co-valently to each other, the bond being polar co-valent. It exists in gaseous state at room temperature. When HCl gas is dissolved in water, it dissociates to furnish H+ ions and thus HCl qualifies the definition of an acid.

    My question is:When is HCl known as an acid? When it is in the gaseous state or when it is dissolved in water to give an aqueous solution? Also what is the difference between an aqueous solution of HCl gas and liquid HCl?Is liquid HCl also an acid?
  2. jcsd
  3. Dec 28, 2016 #2


    User Avatar
    Homework Helper
    Education Advisor
    Gold Member

    Both. The gas ionizes in water giving protons. The solution in water carries dissolved or hydrated protons.
    LIQUID HCl, would have to be kept under some high pressure.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted