14. Solutions

The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using toluene (C₇H₈) in benzene is determined to be -13.0 °C. What is the molality of the toluene in the solution? (Kf benzene = 5.12 °C/m)

What is the freezing point of a 0.100 m aqueous solution, given that the freezing point depression constant (Kf) for water is 1.86 °C/m?

Determine the freezing point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (density = 0.877 g/mL). Pure benzene has a melting point of 5.50°C and a freezing point depression constant of 4.90°C/m. What is the new freezing point of the solution?

A solvent has a freezing point of 10.1°C and a freezing point depression constant of 6.16°C/m. If a solution, made by dissolving 1.218 g of an unknown solute into 25.0 g of the solvent, has a freezing point of 8.8°C, what is the molar mass of the solute?

Water has a molal freezing point constant of 1.86°C kg/mol. Calculate the freezing point of a solution containing 34.335 grams of calcium chloride (CaCl2) dissolved in 163.896 grams of water, assuming complete dissociation.

A glucose solution contains 55.8 g of glucose (C6H12O6) in 455 g of water. Determine the freezing point of the solution. The freezing point depression constant (Kf) for water is 1.86°C/m. What is the freezing point of the solution?

What is the freezing point (in degrees Celsius) of 3.28 kg of water if it contains 170.5 g of CaBr2? The freezing point depression constant for water is 1.86 °C/m and the molar mass of CaBr2 is 199.89 g/mol.