colligative properties

Colligative properties depend on the _____ of solute particles in solution.

• type
• number
• pH
• nature

When KCl (potassium chloride) is dissolved in water, how many particles are in solution?

• 1

• 2

• 3

• 4

• 6

The boiling point of a solution is ______ the boiling point of the pure solvent.

• higher than
• the same as
• lower than
• higher or lower than

The vapor pressure of a pure solvent is ___________ that of a solution

• more than

• less than

• equal to

Which of the following compounds will be most effective in melting the ice on the roads when the air temperature is below zero?

• sodium iodide (NaI)

• magnesium sulfate (MgSO₄)

• potassium bromide (KBr)

• all will be equally effective

Compared to a 0.1 M aqueous solution of NaCl, a 0.8 M aqueous solution of NaCl has a

• higher boiling point and a higher freezing point

• higher boiling point and a lower freezing point

• lower boiling point and a higher freezing point

• lower boiling point and a lower freezing point

While making homemade ice cream, you add rock salt to the ice. Which choice below provides the best explanation for why this is done?

• Adding salt to the ice will lower the freezing point by creating a solution that's freezing point is lower than just the ice.

• Adding salt to the ice will lower the freezing point by creating a solution that's freezing point is higher than just the ice.

• Adding salt to the ice will raise the freezing point by creating a solution that's freezing point is lower than just the ice.

• Adding salt to the ice will raise the freezing point by creating a solution that's freezing point is higher than just the ice.

The freezing point of a solution is ____ the freezing point of the pure solvent.

• the same as
• lower than
• higher than
• no relation to

Colligative properties include

• freezing point

• boiling point

• osmotic pressure

• all of the above

Aqueous solutions that that conduct electricity well are known to have electrolytes that are

• strong

• weak