ChemAetivity Colligative Properties Information Properties of a solution that depend only on how many solute particles are dissolved in a given…

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ChemAetivity Colligative Properties Information Properties of a solution that depend only on how many solute particles are dissolved in a given amount of solvent are called colligative properties. These properties ofsolutions are unique because the identity, mass, and size of the solute particles (atoms, molecules, or ions) have no effect on the colligatlve properties. Only the number ofparticles dissolved changes the value of a colligative property. We will discuss twocolligative properties in class, boiling point elevation and freezing point depression Model 2: Boiling Point ElevationThe boiling point of a solution with a nonvolatile solute is higher than the boiling point of the pure solvent. 0 Water . Solute ( the)?" s .- .,5 -,>’~ , si[._ ,. l _» Egg?“ girl;agi- 4 E? a!“ mi“;’ " ’ Salaam-g “’93) al‘me who’ll W‘Kzlvnisliln miner,Boiling point = 100.000C Boiling Point : 103.500C Critical Thinking Questions 7. What needs to be true in order for a liquid to boil? 8. Which figure in Model 2 has the higher vapor pressure, the pure solvent or thesolution with a nonvolatile solute? Confirm your answer by counting the number of molecules in the vapor phase for both containers.