Chem 116 - General Chemistry II

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Colligative Properties
Colligative Properties - Freezing Point I
A. 0.1 m FeCl2
B. 0.2 m HCl
C. 0.2 m CH3OH (methanol)
D. 0.2 m HF
E. pure water
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Colligative Properties - Freezing Point II
KF(H2O)=1.86 °C-kg/mol
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Colligative Properties - FP with van't Hoff factor
KF(H2O)=1.86 °C-kg/mol
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Colligative Properties - Osmotic Pressure
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Colligative Properties - Vapor Pressure I
At 20.°C, what is the vapor pressure of the solution specified in the preceding question? Candle
wax is a nonvolatile, non-electrolyte. The vapor pressure of pure liquid CCl4 is 155 torr at
20.°C.
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Colligative Properties - Vapor Pressure II
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Freezing Point Depression
(Kf = 1.86 kg ˚C/mol)
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Boiling Point of NaCl Solution
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Henry's Law
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Henry's Law
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Henry's Law
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Vapor Pressure
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Vapor Pressure
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Miscible Liquids
A. Which liquid component is more volitile, ethanol or water?
B. What is the mole fraction of ethyl alcohol in the liquid phase?
C. What is the vapor pressure of ethyl alcohol and the vapor pressure of water above the solution? What is the total pressure of the solution?
D. What is the mole fraction of ethyl alcohol in the gas phase?.
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Boiling Point
Kb(water) = 0.52 C kg/mol
Assume 100 % dissociation of Sr(ClO3)2 in solution.
A. 0.90 m sugar
B. 0.90 m Sr(ClO3)2
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Equilibrium Using ICE Tables
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Determining Molar Mass
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Osmotic Pressure
5.00 g of NaCl (58.44 g/mol) in 350.0 mL of water at 50 C.
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