Solution Found!
What is the boiling point of an aqueous solution that freezes at ?6.7 °C?
Chapter 13, Problem 127P(choose chapter or problem)
What is the boiling point of an aqueous solution that freezes at \(\mathrm{-6.7~^\circ C}\)?
Equation Transcription:
Text Transcription:
-6.7^oC
Questions & Answers
QUESTION:
What is the boiling point of an aqueous solution that freezes at \(\mathrm{-6.7~^\circ C}\)?
Equation Transcription:
Text Transcription:
-6.7^oC
ANSWER:Solution: Here, we are going to determine the boiling point.
Step1:
The depression of freezing point of a solution is calculated by the equation:
Tf = m x Kf --------(1)
Where m is the molality of the solution and Kf is the freezing point depression constant for the solvent.
Similarly, the elevation of boiling point of a solution is calculated by the equation:
Tb = m x Kb --------(2)
Where m is the molality of the solution and Kb is the boiling point elevation constant for the solvent.
Step2:
The freezing point of water = 0oC
Freezing point of the solution = -6.7oC
Therefore, depression in freezing point(Tf ) = 0oC - (-6.7oC)