Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility...
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Transcript of Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility...
Part 2: External Control of Solubility
Temperature and Pressure
Predictions:
Will solubility increase or decrease with increasing temperature?
Will solubility of a gas increase or decrease with increasing pressure?
Concentration UnitsMolarity
Molality
Mole Fraction
Weight Percent
ppm
ppb
Colligative Propeties: Properties of the solvent that change upon dissolution
Vapor Pressure of water at 20 oC is 20.1 mm Hg. What is the pressure of 100 g water mixed with 100 g ethylene glycol?
Distillation: Changing the composition of a mixture of volatile liquids
Vapor Pressures at 50 oC
Water 99 mm HgEthanol 232 mmHg
Distill a 10% alcohol solution.
Boiling Point Elevation
Freezing Point Depression
Effect of Ions
Which is better at melting ice, per gram, NaCl or CaCl2?