Ions in Aqueous Solutions and Colligative Properties

When CH₃OH is dissolved in water, how many particles are in solution?

• 1

• 3

• 4

• 5

• 6

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

• 1

• 2

• 3

• 4

• 6

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

• 1

• 2

• 3

• 4

• 5

When 11.0 g of CaCl₂ dissolves in 45.0 g of water, what is the boiling point of the solution? (K_b = 0.512 ^oC/m)

• 3.4

• 103.4

• 101.1

• 1.1

• 101.4

Find the boiling point of a solution containing 15.0 g sucrose (molar mass = 342.3g/mol), in 100g of water. (Kb = 0.512 ^oC/m)

• 100.2

• 99.8

• 0.2

• -0.2

Which salt below has the largest effect on freezing point?

• C₂H₄O₂

• H₂S

• LiBr

• CaF₂

Tags

NGSS.HS-PS1-3

When 26.0 g of NaCl, are dissolved in 0.5 kg of water, what is the freezing point of this solution? (K_f = 1.86 ^oC/m)

• -3.3

• 103.3

• -1.7

• -0.8

A solution contains 15.5 g of a nonelectrolyte and 200 g of water. The water freezes at -4.5° C and K_f = 1.86° C/m. What is the molar mass of the nonelectrolyte?

• 18g/mol

• 32g/mol

• 16g/mol

• 46g/mol

• 53g/mol

Tags

NGSS.HS-PS3-4

Using the graph above, which compound would dissolve the fastest at 20° C, KCl, NaCl, KNO₃, or KClO₃?

• KCl

• NaCl

• KNO₃

• KClO₃

Using the graph above, which compound would dissolve the fastest at 60° C, KCl, NaCl, KNO₃, or KClO₃?

• KCl

• NaCl

• K₂Cr₂O₇

• KClO₃

Tags

NGSS.HS-PS1-5