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

Boiling point and vapor pressure

  1. Aug 25, 2011 #1
    I am trying to understand the concept of boiling from a very fundamental perspective. Most textbooks say that: as a liquid is heated, it's vapor pressure increases. When the vapor pressure reaches the surrounding pressure(or atmospheric pressure at that point), then boiling occurs.

    I agree with the above point.

    My question is: when the vapor pressure reaches the surrounding pressure, what physically happens that allows vapor to form all through the liquid for it to boil.

  2. jcsd
  3. Aug 25, 2011 #2
    The pressure from inside the water is not much more than 1 atmosphere either. Seems reasonable to me.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook