How is freezing point depression used in real life?

Answer 1

Have you ever seen trucks sprinkling salt on icy roads in North America? Why should they do this?

You can also add a small amount of ethylene glycol to your radiator fluid. It is obvious that both of these practices are a result of North America's harsh winters, and the salty roads are also the cause of the large number of rust-buckets that can be seen on the country's roadways.

What else can I think of? Here's a good one: homemade ice cream made with real cream, fruit, and custard tastes far better than store-bought ice cream. When churning ice cream, you usually use a mixture of salt and ice.

Freezing point depression is also needed in the laboratory when estimating a new substance's molecular mass through cryoscopy.

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Answer 2

Freezing point depression is used in real life in various applications such as:

  1. Antifreeze in automobiles: Antifreeze, typically ethylene glycol or propylene glycol, is added to the radiator water in automobiles to lower the freezing point of the coolant, preventing it from freezing in cold temperatures and causing damage to the engine.

  2. Road salt: Salt or salt solutions are spread on roads and sidewalks in cold climates to lower the freezing point of ice, melting it and preventing the formation of hazardous ice patches.

  3. Food preservation: Freezing point depression is utilized in food preservation techniques such as freezing and freezing-point control in the production of ice cream to prevent the formation of large ice crystals, resulting in a smoother texture.

  4. Cryopreservation: Biological materials such as cells, tissues, and embryos are preserved at low temperatures using cryoprotectants, which depress the freezing point of the solution, minimizing cellular damage during freezing and thawing processes.

  5. Winter sports: Adding substances like salt or ethylene glycol to ice rinks or ski slopes lowers the freezing point of the ice, creating a smoother surface for activities like ice skating and skiing.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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