Colligative Properties OF SOLUTIONS. Colligative Property A property that depends only on the number of particles, and not on their identity 3 Colligative.

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Presentation transcript:

Colligative Properties OF SOLUTIONS

Colligative Property A property that depends only on the number of particles, and not on their identity 3 Colligative Properties of Solutions 1)Vapor Pressure Lowering (v.p. ↓) 2)Boiling Point Elevation (b.p. ↑) 3)Freezing Point Depression (f.p. ↓)

Vapor Pressure Lowering (v.p. ↓) Vapor pressure of pure water What happens if you add sugar in water?

Boiling Point Elevation (b.p. ↑) What happens when you put seasoning in boiling water?

Freezing Point Depression (f.p. ↓) Antifreeze in a car (C 2 H 6 O 2, ethylene glycol) Salt on icy roads

Why is the freezing point of a solution lower than that of pure solvent? Talk with your neighbor!