Understanding Colligative Properties

What is the primary effect of adding a solute to a solvent in terms of colligative properties?

• It makes the solvent evaporate faster.

• It alters the freezing and boiling points of the solvent.

• It changes the solvent's color.

• It increases the solvent's density.

Which formula is used to calculate the change in freezing point due to a solute?

• ΔTF = M * I * KF

• ΔTB = M * I * KB

• ΔTF = M * I * KB

• ΔTB = M * I * KF

What is the dissociation factor for a non-electrolyte solute?

• It is equal to the number of ions.

• It is always zero.

• It is always one.

• It varies depending on the solvent.

How do you determine the dissociation factor for an ionic solute?

• By counting the number of ions in the solution.

• By checking the solute's color.

• By measuring the solute's mass.

• By observing the solute's boiling point.

What suffixes are commonly associated with molecular compounds?

• ium, ide, ate, ite

• eyid, ick, it, at

• ose, in, anal, ill, aal, al

• ate, ite, ide, one

What is the boiling point elevation constant (KB) for water?

• 0.86°C per molal

• 2.00°C per molal

• 0.52°C per molal

• 1.86°C per molal

In the boiling point problem, what is the calculated change in boiling temperature for the solution?

• 0.447°C

• 1.547°C

• 0.547°C

• 1.447°C

How is molality calculated?

• Grams of solute divided by kilograms of solvent

• Grams of solute divided by liters of solution

• Moles of solute divided by kilograms of solvent

• Moles of solute divided by liters of solution

What is the new freezing point of water when 18 g of glucose is dissolved in 1200 g of water?

• -0.154°C

• -1.254°C

• -0.254°C

• -1.154°C

What is the molecular mass of the unknown compound in the freezing point problem?

• 139.25 g/mol

• 159.25 g/mol

• 149.25 g/mol

• 129.25 g/mol