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Boiling Point Elevation

#### Q. There is a 50/50 blend of engine coolant and water (by volume). If a car's cooling system holds 4.40 gal, what is the boiling point of the solution? Assume that at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Also, assume that the engine coolant is pure ethylene glycol, which is non‑ionizing and non‑volatile, and that the pressure remains constant at 1.00 atm. The boiling‑point elevation constant for water will be needed.

Solved • Sep 27, 2019

Boiling Point Elevation

#### Q. 14. Calculate Kb of the solvent given te normal boiling point of the 3.6m solution is 35.6 degrees C. The normal boiling point of the solvent is 32.1 degrees C. The solute is potassium iodide in a polar solvent.

Solved • Sep 25, 2019

Boiling Point Elevation

#### Q. A solution prepared from 7.75 g of an organic compound in 98.0 g of benzene has a boiling point of 82.16 degrees C. Determine the molar mass of the organic compound. The normal boiling point of benzene is 80.31 degrees C, and its boiling point elevation constant is 2.53 degrees C / m.

Solved • Sep 23, 2019

Boiling Point Elevation

#### Q. 15. Four aqueous solutions are prepared by dissolving 10.0 g of each of the following solutes in 1.00 kg of water: benzene (C6H6), KI, and CaCl2, and AlBr3. Which solution has the largest boiling point? Be sure to report the change in the boiling point (in degrees C to four decimal places) for each solution. Kb (H2O) = 0.512 degrees C m^-1. .

Solved • Sep 20, 2019

Boiling Point Elevation

#### Q. 12. Find the boiling point (in degrees C to one decimal place) of an aqueous 22.8% by mass sodium chloride solution. (Kb(H2O) = 0.512 degrees C kg mol^-1.

Solved • Sep 20, 2019

Boiling Point Elevation

#### Q. 9. How much (in g to two decimal places) glycerol (C3H8O3), a nonvolatile solute, must be added to a pot containing 2.00 L of water to bring the boiling point of the solution to 103.0 degrees C?

Solved • Sep 20, 2019

Boiling Point Elevation

#### Q. Calculate the freezing point and boiling point of a solution containing 7.55 g of ethylene glycol (C2H6O2) in 99.3 mL of ethanol. Ethanol has a density of 0.789 g/cm^3. Calculate the boiling point of the solution. Tb = _____

Solved • Sep 18, 2019