Multiple Choice
At an elevation of 1.45×10^4 ft, what is the approximate boiling point of water?
14. Solutions
Boiling Point Elevation
Back14. Solutions
Boiling Point Elevation
- Open Question
Determine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 ml of benzene (d = 0.877 g/ml). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.
- Multiple ChoiceA solution of water (Kb=0.512 °C/m) and glucose boils at 103.56 °C. What is the molal concentration of glucose in this solution? Assume that the boiling point of pure water is 100.00 °C.
- Open Question
A solution of toluene (C₇H₈) in 301 g of cyclohexane (C₆H₁₂) has a boiling point of 90.30°C. what quantity in moles of toluene are in the solution? (for cyclohexane kb = 2.92°C/m, normal boiling point, Tb = 80.90°C)
- Multiple Choice100.0 g of urea (CO(NH2)2) is dissolved in 550.0 g of liquid chloroform. Given that urea is a covalent compound with a molar mass of 60.07 g/mol and the boiling point elevation constant (Kb) for chloroform is 3.63 °C/m, what is the boiling point of the solution if the normal boiling point of chloroform is 61.2 °C?
- Multiple Choice
Pure water boils at 100°C. What is the new boiling point of water after the addition of 13.12 g aluminum chloride, AlCl3, to 615 g water?
3views - Open Question
Determine the boiling point of a solution that contains 78.8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0.877 g/ml). Pure benzene has a boiling point of 80.1°C and a boiling point elevation constant of 2.53°C/m.
1views - Multiple ChoiceIf 29.5g of sodium phosphate (Na3PO4) is dissolved in 500.0g of water, what is the boiling point of this solution? Assume the boiling point elevation constant (Kb) for water is 0.512 °C/m and the molar mass of Na3PO4 is 163.94 g/mol.
- Multiple ChoiceSome people add salt to water, claiming that the salt raises the boiling point of the water, which makes the food cook faster. If 323 g of NaCl is added to a 2.54 L pot of water, what is the new boiling point of the solution?
- Multiple ChoiceA solution of a nonvolatile solute in water has a boiling point of 380.5 K. Calculate the vapor pressure of water above this solution at 338 K. The vapor pressure of pure water at this temperature is 0.2467 atm. Which of the following is the vapor pressure of water above the solution?
- Multiple ChoiceA glucose solution contains 55.8 g of glucose (C6H12O6) in 455 g of water. Determine the boiling point of the solution. The boiling point elevation constant (Kb) for water is 0.512 °C/m. What is the boiling point of the solution?