Chemistry

posted by Kathleen

What colligative properties are displayed by these situations.
1. Antifreeze is added to car cooling system preventing freezing when air temp is below 0 degrees C.
2. Ice melts on sidewalk after salt has been spread

  1. DrBob222

    Both are freezing point depression.

  2. Kathleen

    Thanks!
    So the antifreeze one doesn't have anything to do with vapor pressure?

  3. DrBob222

    Ethylene glycol is permanent antifreeze that is added to cars these days. That lowers the freezing point and raises the boiling point AND most cars these days operate with the radiator under pressur which raises the boiling point even higher. The engine is a little more efficient at the higher temperature.

  4. Kathleen

    THANKS!

  5. Mike hunt

    U shouldn't cheet on Chems

  6. Angie

    Mike hunt- It's been 7 years lol

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