11. Basic Chemistry: Physical Properties of Solution

A cucumber place in concentrated brine (saltwater) shrinks because water will move from the cucumber to the brine. This process is known as .......

• osmosis

• reversed osmosis

• diffusion

• solvation

• hydration

What factor/s affect the solubility of gases in liquids?

• Temperature.

• Concentration.

• Volume.

• Partial pressure.

• Mass.

Which of the following do you need to know to calculate the molarity of a salt solution?

• the mass of salt added.

• the molar mass of the salt.

• the volume of water added.

• the total volume of the solution.

• the mass of the solvent.

Which of the following do you need to know to calculate the molality of a salt solution?

• the mass of salt added.

• the molar mass of the salt.

• the volume of water added.

• the total volume of the solution.

• the mass of the solvent.

A solution that is 9% by mass glucose contains 9 g of glucose in every .......... g of solution.

• 1

• 10

• 100

• 1000

• 0,1

If 67.1 g of CaCl₂ is added to 275 g of water, calculate the mass percent of CaCl₂ in the solution.

• 10.4%

• 11,6%

• 9,5%

• 19.6%

• 6,3%

How is the vapor pressure related to the boiling point of a solution?

• The boiling point decreases as the vapour pressure increases.

• The boiling point increase as the vapour pressure decrease.

• The boiling point increase as the vapour pressure increases.

• There's no realtionship between the boiling point increase and the vapour pressure.

• There's no correct answer.

Consider these three mercury manometers. One of them has 1 mL of water placed on top of the mercury, another has 1 mL of a 1 m urea solution placed on top of the mercury, and the third one has 1 mL of a 1 m NaCl solution placed on top of the mercury. Identify X, Y, and Z with these solutions.

• x = water y = urea z = NaCl.

• x = urea y = water z = NaCl.

• x = NaCl y = water z = urea.

• x = water y = NaCl z = urea.

• x = urea y = NaCl z = water.

Liquid A is a pure compound and liquid B contains a solute dissolved in liquid A. Which freezes at the higher temperature?

• Liquid A.

• Liquid B.

• Liquid A and B.

• None of these answers.

A colligative property of a solution depends only on the amount of solute present. Which is/are correct coligative property?

• Vapor pressure lowered.

• Freezing point raised.

• Freezing point lowered.

• Osmotic pressure lowered.

• Boiling point raised.