Part A What is the boiling point of a solution made using 777 g of sucrose, C12H

Question

Part A What is the boiling point of a solution made using 777 g of sucrose, C12H22O11, in 0.300 kg of water, H2O?

Part B What is the freezing point of a solution that contains 27.6 g of urea, CO(NH2)2, in 225 mL water, H2O? Assume a density of water of 1.00 g/mL.

Part C A 35.0 mL sample of an unknown HClO4 solution requires 43.3 mL of 0.106 M NaOH for complete neutralization. What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+NaOH(aq)H2O(l)+NaClO4(aq)

Explanation / Answer

Question 1) What is the boiling point of a solution made using 777 g of sucrose, C12H22O11, in 0.300 kg of water, H2O?

Solution-

moles sucrose = (777 g / 342.3 g/mole) = 2.27 moles

molality = (2.27 moles / 0.30 kg) = 7.57 m

Tb = kb * m = (0.512 * 7.57) = 3.87

bp = (bp of water + Tb)
bp = 103.87 C

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects