WorksheetsColligative Properties Boiling point elevation
Total questions: 17
Worksheet time: 44mins
Have you ever wondered why cars overheat in traffic most often in the summertime?
Why do you think the antifreeze-water mixture has a higher boiling point than does pure water?
How will a solution require a higher temperature to achieve any given vapor pressure?
What is the relationship between vapor pressure and boiling point elevation?
What do you think are some of the limitations of determining molar mass when using boiling point elevation?
Calculate the boiling point of an aqueous solution where enough lactic acid (C6H10O5) is added to make a 0.37 molal solution. The Kb for water is 0.512 °C/m.
Calculate the boiling point of an aqueous solution where enough lactic acid (C6H10O5) is added to make a 0.40 molal solution. The Kb for water is 0.512 °C/m?
What is the boiling point elevation when 120 g of lactic acid (C6H10O5) is dissolved in 600 g of cyclohexane (C6H12)? The boiling point constant for cyclohexane 2.79 °C/m, and the boiling point of pure cyclohexane is 80.74 oC.
What is the boiling point elevation when 250g of lactic acid (C6H10O5) is dissolved in 754 g of cyclohexane (C6H12)? The boiling point constant for cyclohexane 2.79 °C/m, and the boiling point of pure cyclohexane is 80.74 oC.
A solution was prepared by dissolving some acetone, (CH3)2CO, in 55.0 g of pure water. The boiling point of the solution at 1 atm was 100.25 °C. How many grams of acetone was dissolved to yield the solution? (Kb for water is 0.512 °C/m)
A solution was prepared by dissolving some acetone, (CH3)2CO, in 42.0 g of pure water. The boiling point of the solution at 1 atm was 100.217 °C. How much acetone, in grams, was dissolved to yield the solution? (Kb for water is 0.512 °C/m)
The boiling point is directly proportional to vapor pressure.
True
False
We can use the boiling-point elevation to determine the molar mass of the solute.
True
False
The boiling-point elevation is also a type of colligative property.
True
False
Calculate the boiling point elevation of an aqueous solution where enough urea (CH₄N₂O) is added to make a 0.45 molal solution. Use the boiling point elevation constant of water.
What is the new boiling point of a solution prepared by adding 80.0 g of sodium acetate (C2H3NaO2) to 420 mL of water?
How many grams of fructose (C6H12O6) must be dissolved in 250 g of water to raise the boiling point by 3.8 °C?
