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

• 1

• 2

• 3

• 4

• 6

When CaBr₂ is dissolved in water, how many particles will be in solution for each unit?

• 1

• 2

• 3

• 4

• 5

At the same concentration, which salt will have the largest effect on the freezing point?

• C₂H₄O₂

• H₂S

• LiBr

• CaF₂

Tags

NGSS.MS-PS3-4

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

• type
• number
• pH
• nature

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

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

Tags

NGSS.MS-PS1-4

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 van't Hoff factor measures the number of particles formed in solution. What is the van't Hoff factor for the compound Na₂S?

• 1

• 3

• 5

• 7

Which of the following solutions will have the lowest freezing point?

• 1.0 mol/L sucrose (C₁₂H₂₂O₁₁)

• 1.0 mol/L lithium chloride (LiCl)

• 1.0 mol/L sodium phosphide (Na₃P)

• 1.0 mol/L magnesium fluoride (MgF₂)

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

• NaI

• MgO

• KBr

• all will be equally effective

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which solution has the highest boiling point at standard pressure?

• 0.10 M KCl(aq)

• 0.10 M K₂O(aq)

• 0.10 M K₃Al(aq)

• 0.10 M KF(aq)

Tags

NGSS.HS-PS1-5