Experimentally Determining the Freezing Point of Water

AI Thread Summary
The freezing point of a solution containing 50 g of water and 50 g of ethylene glycol can be calculated using the formula delta T = (Kf)(molality), where Kf is the freezing point depression constant. The discussion highlights the importance of considering the Van't Hoff factor, although it is not explicitly required in the problem statement. The freezing point of pure water is determined experimentally to account for impurities and variations in atmospheric pressure that can affect the freezing point. Understanding these factors allows for more accurate predictions of freezing behavior in real-world conditions. Accurate experimental determination is essential for applications like antifreeze formulation in vehicles.
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Homework Statement



1.Antifreeze used in your car is ethylene glycol, HO-CH2-CH2-OH. It is usually diluted 1:1. Assume that you made a solution of 50 g of water (solvent) and 50 g of ethylene glycol (solute). What temperature in Celsius would your car be protected to in cold weather? Assume the freezing point of pure water is 0 degrees Celsius.

2.Why is the freezing point of pure water determined experimentally instead of just assuming tha it is 0 degrees Celsius?


Homework Equations


Do i use the formula, delta T = (Kf)(molality)?
 
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Yes for question number one , were you asked to incorporate the Van't Hoff factor?
 
it doesn't say.
 

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