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vilisito
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How does the minimum(coldest) temperature that a supercooled solution of ethanol and distilled water depend on the concentration?
If the solution is really "supercooled" (i.e. T<Tf) it is difficult to tell. If you merely want to determine the freezing point of a water solution to which some ethanol has been added, you can estimate this using the value of Kf(H2O) to calculate the freezing point depression. If the solution is mostly ethanol, you could do the same thing, but you would need to know what Kf(ethanol) is.vilisito said:How does the minimum(coldest) temperature that a supercooled solution of ethanol and distilled water depend on the concentration?
The thing is that I am trying to verify it experimentally. Apparently there is a supercooling curve that i have achieved only once. Any experience with a similar experiment? The solution reaches a low temperature and if done rightly, in a couple of second the temperature should suddenly rise indicating that the solution has frozen.Quantum Defect said:If the solution is really "supercooled" (i.e. T<Tf) it is difficult to tell. If you merely want to determine the freezing point of a water solution to which some ethanol has been added, you can estimate this using the value of Kf(H2O) to calculate the freezing point depression. If the solution is mostly ethanol, you could do the same thing, but you would need to know what Kf(ethanol) is.
vilisito said:The thing is that I am trying to verify it experimentally. Apparently there is a supercooling curve that i have achieved only once. Any experience with a similar experiment? The solution reaches a low temperature and if done rightly, in a couple of second the temperature should suddenly rise indicating that the solution has frozen.
A supercooled ethanol/distilled water solution is a liquid mixture that has been cooled below its freezing point without solidifying. It is a state of matter known as a supercooled liquid, where the molecules are still in liquid form but have a lower temperature than the normal freezing point.
A supercooled ethanol/distilled water solution is created by cooling the liquid mixture below its freezing point while keeping it in a liquid state. This can be achieved by using special techniques such as rapid cooling or adding nucleating agents to prevent crystallization.
A supercooled ethanol/distilled water solution has unique properties such as a lower freezing point and a higher viscosity compared to the same solution at higher temperatures. It also has a higher potential for nucleation and can rapidly crystallize when disturbed.
Supercooled ethanol/distilled water solutions have various applications in industries such as pharmaceuticals, food and beverage, and cryogenics. They can be used for drug delivery, preservation of food and beverages, and as a coolant for cryogenic processes.
Handling a supercooled ethanol/distilled water solution can be hazardous as it can easily crystallize when disturbed, leading to the formation of ice crystals. These ice crystals can cause damage to equipment and can also cause injury to the handler due to the sudden release of energy during crystallization. It is important to handle supercooled solutions with caution and proper safety measures in place.