Chem help

[Bimal]

can anybody tell me abt vapor pressure and its dependency on boiling point?

 

[hassam]

http://www.chemguide.co.uk/physical/kt/basic.html#top
scroll down a bit and u will find vapour pressure....it explains greatly.......and explanation is easy to read

 

[hassam]

Something boils when its vapor pressure equals the atmospheric (barometric) pressure above it. When the two are equal, that defines the boiling point.

Therefore, you can either boil something by heating the liquid, and thus raising its vapor pressure (vapor pressure goes up with temperature), or you can boil something by reducing the atmospheric pressure above it until it matches the vapor pressure.