Concept explainers
How many liters of the antifreeze ethylene glycol
Page 600
Interpretation:
The volume (in liters) of the antifreeze ethylene glycol and the boiling point of the mixture are to be evaluated.
Concept introduction:
The expression for the freezing point depression is as follows:
Here,
The freezing point of pure solute is represented as
The expression for the boiling point elevation is as follows:
Here, the boiling point of pure solute is represented as
Answer to Problem 64QP
Solution:
Explanation of Solution
Given information:
Ethylene glycol is non-ionizing, so van’t Hoff factor,
Evaluate molality of ethylene glycol by using the equation given below:
Substitute
Therefore, the molality of ethylene glycolis
Density of water is
Hence,
The molar mass of ethylene glycol is
The mass of ethylene glycol required to add in
The density of ethylene glycol is
The volume of ethylene glycol can be evaluated as follows:
Rearrange the equation and substitute
So, the volume of ethylene glycol is
Calculate the boiling point of the solution by using the equation given below:
Substitute
Therefore, the boiling point of the solution is
The volume of ethylene glycol is
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Chapter 13 Solutions
CONNECT ACCESS CODE ONLY CHEMISTRY
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