Hello, I'm a chemist with a specialty in physical chemistry. I can help you figure out the freezing point of 80 proof alcohol.

To begin, let's understand what 80 proof means. It's a measure of the alcohol content in a beverage, specifically the percentage of alcohol by volume (ABV). An 80 proof beverage contains 40% ethanol and 60% water.

Now, **the freezing point of a solution is lower than the freezing point of its pure components**, due to a phenomenon called freezing point depression. This happens because the presence of solute molecules (in this case, ethanol) disrupts the formation of the crystal lattice structure that pure water forms when it freezes.

The freezing point depression can be calculated using the following equation:

**ΔT_f = K_f * m**

where:

* ΔT_f is the freezing point depression (the difference between the freezing point of pure water and the freezing point of the solution)
* K_f is the freezing point depression constant (for water, K_f = 1.86 °C/molal)
* m is the molality of the solution (moles of solute per kilogram of solvent)

To determine the freezing point of 80 proof alcohol, we need to calculate the molality of the solution:


1. Calculate the moles of ethanol:
* Assume a 100 g sample of 80 proof alcohol.
* 40 g of the sample is ethanol.
* The molar mass of ethanol (C₂H₅OH) is 46.07 g/mol.
* Moles of ethanol = (40 g) / (46.07 g/mol) = 0.868 mol


2. Calculate the mass of water:
* The sample contains 60 g of water.


3. Calculate the molality:
* Molality (m) = (0.868 mol) / (0.060 kg) = 14.47 mol/kg


4. Calculate the freezing point depression:
* ΔT_f = (1.86 °C/molal) * (14.47 mol/kg) = 26.9 °C

5. **Determine the freezing point of the solution:**
* The freezing point of pure water is 0 °C.
* Freezing point of 80 proof alcohol = 0 °C - 26.9 °C = -26.9 °C

Therefore, **80 proof alcohol freezes at approximately -26.9 °C**.

It is important to note that this is just an approximation. The actual freezing point of 80 proof alcohol may be slightly different due to factors such as the presence of impurities and variations in the exact composition of the beverage.

I hope this explanation is helpful! Let me know if you have any other questions.
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All 80 proof vodka freezes at a temperature of -24 degrees Celsius(-11,2 degrees Fahrenheit). Sometimes the freezer is a little bit colder than this or the bottle is placed close to a freezer element and it may actually freeze.read more >>