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

Increasing vapor pressure in water

  1. Sep 8, 2009 #1
    Why does adding salt to water increase the vapor pressure? Does increasing the volume of water increase the vapor pressure?
     
  2. jcsd
  3. Sep 8, 2009 #2

    Ygggdrasil

    User Avatar
    Science Advisor

    Adding salt to water decreases the vapor pressure of the solution.

    No, vapor pressure is independent of volume. First, you need to consider the main thermodynamic driving force for the conversion of liquid water to gaseous water. Is this process driven by water seeking a lower potential energy (enthalpy)? Is it driven by the increase in entropy?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Increasing vapor pressure in water
  1. Vapor pressure (Replies: 1)

  2. Vapor pressure (Replies: 1)

  3. Vapor pressure (Replies: 6)

Loading...