colligative properties n.
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Colligative Properties - PowerPoint PPT Presentation


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Colligative Properties. Colligative Properties. ____________________ – physical properties of solutions that are affected only by the __________ of particles NOT the __________ of the solute They include: ____________________ ____________________ ____________________ ____________________

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slide2

Colligative Properties

  • ____________________ – physical properties of solutions that are affected only by the __________ of particles NOT the __________ of the solute
  • They include:
    • ____________________
    • ____________________
    • ____________________
    • ____________________
  • In all of these we will be comparing a ____________________ to a ____________________
slide3

Vapor Pressure Lowering

____________________– the pressure exerted in a closed container by liquid particles that have escaped to the surface and entered the gas phase

slide4

Vapor Pressure Lowering

The vapor pressure of a mixture is __________ than a non volatile pure substance due to the fewer number of particles that are able to escape into the gas phase

slide5

Boiling Point Elevation

__________ - point at which enough energy has been added to overcome the intermolecular forces that hold the solute in the solution

The boiling point of a mixture is __________ than the boiling point of a pure substance

slide6

Freezing Point Depression

____________________ - point where enough energy has been removed from the solution to slow the molecules down and increase intermolecular forces so the solution becomes a solid

The freezing point of a mixture is __________ than the freezing point of a pure substance

slide7

What is Osmosis?

Suppose a salt solution and water are separated by a semipereable membrane

Water will move through the membrane from into the salt solution to equalize the concentrations on each side of the membrane.

This is osmosis

slide8

Osmotic Pressure

Osmotic pressure is the pressure exerted on the semi permeable membrane by the movement of the water