(SU) Colligative Properties and Solubility Quiz

An equal number of moles of KI and MgI₂ are dissolved in equal volumes of water. Which solution has the lower boiling point?

• KI

• MgI₂

• Both have the same boiling point

• Cannot be determined

An equal number of moles of KI and MgI₂ are dissolved in equal volumes of water. Which solution has the lower vapor Pressure?

• KI

• MgI₂

• Both have the same boiling point

• Cannot be determined

An equal number of moles of KI and MgI₂ are dissolved in equal volumes of water. Which solution has the lower freezing point?

• KI

• MgI₂

• Both have the same boiling point

• Cannot be determined

What has the higher boiling point?

• Seawater

• Distilled water

• Both have the same boiling point

• Cannot be determined

Which solution has the higher boiling point: 1.0 M KNO₃ or 1.5 M KNO₃?

• 1.0 M KNO₃

• 1.5 M KNO₃

• Both have the same boiling point

• Cannot be determined

Which solution has the higher boiling point: 0.100 M KCl or 0.100 M MgCl₂?

• 0.100 M KCl

• 0.100 M MgCl₂

• Both have the same boiling point

• Cannot be determined

At 50°C, how much potassium nitrate will dissolve in 100g of water to form a saturated solution?

• 80g

• 90g

• 100g

• 110g

Consider a solution containing 80g of KNO₃ in 100g of water at 60°C. What does this information tell you about the level of saturation of the solution?

• Unsaturated

• Saturated

• Supersaturated

• Cannot be determined

Consider a solution containing 80g of KNO₃ in 100g of water at 60°C. What would happen if you cooled the solution to 40°C?

• It would remain unsaturated

• It would become saturated

• It would become supersaturated

• Cannot be determined

What is the solubility of potassium nitrate at 70°C?

• 130g

• 140g

• 150g

• 120g