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Part 2: External Control of Solubility Temperature and Pressure ctions: solubility increase or decrease with increasing temperature? solubility of a gas increase or decrease with increasing pressure?

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Page 1: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? 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?

Page 2: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility
Page 3: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility
Page 4: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Concentration UnitsMolarity

Molality

Mole Fraction

Weight Percent

ppm

ppb

Page 5: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility
Page 6: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

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?

Page 7: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

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.

Page 8: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Boiling Point Elevation

Page 9: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Freezing Point Depression

Page 10: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Effect of Ions

Page 11: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Which is better at melting ice, per gram, NaCl or CaCl2?

Page 12: Part 2: External Control of Solubility Temperature and Pressure Predictions: Will solubility increase or decrease with increasing temperature? Will solubility

Section C. Solubility Solubility – amount of substance that can be dissolved in a certain amount of water at a certain temperature Saturated – Max amount

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Sample Exercise 13.1 Predicting Solubility Patterns 13 Worked Exampl… · Sample Exercise 13.1 Predicting Solubility Patterns ... 2 in water at this temperature is 3 ... Comment

Instruct - grp 2 Solubility...Solubility 1 Solubility A. Solubility Product In this chapter, we will be discussing the solubility of ionic compounds (salts) in water. However, solubility,

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