Solutions Colligative

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?

• sodium iodide (NaI)

• magnesium sulfate (MgSO₄)

• potassium bromide (KBr)

• all will be equally effective

Tags

NGSS.HS-PS3-4

Which solution has the lowest freezing point?

• 10. g of KI dissolved in 100. g of water

• 20. g of KI dissolved in 200. g of water

• 30. g of KI dissolved in 100. g of water

• 40. g of KI dissolved in 200. g of water

Which sample, when dissolved in 1.0 liter of water, produces a solution with the lowest freezing point?

• 0.1 mol of C₂H₅OH

• 0.1 mol of LiBr

• 0.2 mol of C₆H₁₂O₆

• 0.2 mol of CaCl₂

Compared to the freezing point and boiling point of water at 1 atmosphere, a solution of a salt and water at 1 atmosphere has a

• lower freezing point and a lower boiling point

• lower freezing point and a higher boiling point

• higher freezing point and a lower boiling point

• higher freezing point and a higher boiling point

Compared to the freezing point of 1.0 M KCl(aq) at standard pressure, the freezing point of 1.0 M CaCl₂(aq) at standard pressure is

• lower

• higher

• the same

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

Which solution has the highest boiling point at standard pressure?

• 0.10 M KCl(aq)

• 0.10 M K₂SO₄(aq)

• 0.10 M K₃PO₄(aq)

• 0.10 M KNO₃(aq)

A solution consists of 0.50 mole of CaCl₂ dissolved in 100. grams of H₂O at 25°C. Compared to the boiling point and freezing point of 100. grams of H₂O at standard pressure, the solution of CaCl₂ at standard pressure has

• lower freezing point and a lower boiling point

• lower freezing point and a higher boiling point

• higher freezing point and a lower boiling point

• higher freezing point and a higher boiling point

Tags

NGSS.HS-PS3-4

The table above gives information about four aqueous solutions at standard pressure.

Which list of solutions is arranged in order from highest boiling point to lowest boiling point?

• A, B, D, C

• A, C, B, D

• C, D, B, A

• D, B, C, A

Tags

NGSS.HS-PS3-4