how does salt affect the boiling point of liquid?

Hi radmila,

Salt raises the boiling point of water.

REFERENCE:

Ask A ScientistŠ ? Salt and Boiling Water II 
http://www.newton.dep.anl.gov/askasci/gen01/gen01021.htm
..."As soon as any of the salt dissolves in the water, the boiling point of 
the water will begin to rise -- by about one half degree Celsius for
every 58 grams of salt dissolved per kilogram of water. In fact, any
non-volatile soluble substance will raise the boiling point of water.
That is why antifreeze (ethylene glycol) provides boiling protection
in winter as it simultaneously provides freezing protection in the
summer..."

EXPERIMENTAL SCIENCE PROJECTS:
The Effect of Salt on the Boiling Temperature of Water
http://www.isd77.k12.mn.us/resources/cf/ExmSciProj.html

Water Freezing and Boiling Myths
http://itotd.com/articles/521/
..."Boiling Water (with salt): I added a generous 2 tablespoons of
table salt?much more than most people would ever use for boiling pasta
or vegetables?to a mere 1 liter of water. It boiled in 6 minutes, 33
seconds (versus 6 minutes for unsalted, room-temperature water) and
reached a temperature, according to my thermometer, of 216°F
(102°C)..."


Hope this helps!


~~Cynthia