Colligative Properties of Solutions_2

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Chemistry
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Colligative Properties of Solutions_2

Colligative Properties Of SolutionsAta Çine, Adilcan Karaağaç, Aylin Ekşioğlu

Freezing Point DepressionFreezing point depression can be seen when the freezing point of a solution is less than the freezing point of the pure solvent. For example, pure water freezes at 0.0 degrees Celcius, but if you put salt in it, depending on the amount of salt you put, the new water/salt solution will have a lower freezing point. That is why solutions with salt are used on roads in winter days.

Elevation of Boiling PointAccording to this colligative law, a solution will boil at a higher temperature than the pure solvent. And if more solute dissolves, the effect will be greater.

What are "Colligative Properties"?These properties depends on the concentration of solute molecules . Colligative properties include freezing point depression, boiling point elevation, osmotic pressure and vapor pressure lowering.

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Resources:“Colligative Properties Of Solutions”Internet. http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/collig.html. 05.01.2016“Osmotic Pressure Calculations”Internet. http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/ospcal.html. 05.01.2016“Boiling Point Elevation”Internet. http://www.chemteam.info/Solutions/BP-elevation.html. 05.01.2016“Freezing Point Depression”Internet. http://www.chem.purdue.edu/gchelp/solutions/freeze.html. 05.01.2016“Ice Cream And Freezing Point Depression”Internet. https://www.youtube.com/watch?v=TBkNstDmtj0. 05.01.2016

Osmotic Pressure It is the minimum pressure that needs to be applied to stop the flow of water from a semipermeable membrane in a solution. Interestingly, The osmotic pressure of a dilute solution is found to obey a relationship of the same form as the ideal gas law.


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