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160 solutions

The Colligative Properties

Q. Which aqueous solution will have the lowest freezing point? 0.20 m C12H22O11 0.050 m CH3COOH 0.050 m CaCl2 0.10 m HCl 0.15 m NaCl

Solved • Nov 12, 2019

The Colligative Properties

Q. List the following aqueous solutions in order of decreasing boiling point. 0.120 m glucose, 0.050 m LiBr, 0.050 m Zn(NO3)2. Rank items in order of decreasing boiling point.

Solved • Nov 12, 2019

The Colligative Properties

Q. A solution of water (Kf=1.86 ∘C/m) and glucose freezes at − 3.35 ∘C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ∘C. Express your answer to three significant figures and include the appropriate units.

Solved • Nov 12, 2019

The Colligative Properties

Q. A 0.050 M solution of AlCl3 had an observed osmotic pressure of 3.85 atm at 20 ∘C . Calculate the van't Hoff factor i for AlCl3. Express your answer numerically.

Solved • Nov 12, 2019

The Colligative Properties

Q. Which of the following solutions will be expected to have the highest vapor pressure? Group of answer choices 0.75 m C2H5OH 0.30 m NaCl 0.10 m KClO4 0.50 m Ca(ClO4)2 0.10 m Al(ClO4)3

Solved • Nov 12, 2019

The Colligative Properties

Q. What is the new freezing point (°C) of a solution prepared by dissolving 8.00 g of NaNO3 in 115 g of water? The molal freezing point depression constant for water is 1.86 °C/m. Group of answer choices 0.00 -1.52 1.52 -3.04 3.04

Solved • Nov 12, 2019

The Colligative Properties

Q. The vapor pressure of pure water at 25°C is 23.8 torr. What is the vapor pressure (in torr) of water above a solution prepared by dissolving 25.0 g of ethanol (a nonelectrolyte; MW = 46.07 g/mol) in 250.0 g of water? Group of answer choices 2.16 23.8 21.6 22.9 0.897

Solved • Nov 12, 2019