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anonymous

  • one year ago

Using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk

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  1. sweetburger
    • one year ago
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    Think of the freezing point depression equation which would be \[\Delta T= i K f m \]. I represents the number of ions the salt dissociates into which salt given in the question dissolves into more ions?

  2. anonymous
    • one year ago
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    OKAY KINDA LOST

  3. sweetburger
    • one year ago
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    Alrighty so when a salt dissociates into a substance it breaks off into its respective ions.

  4. sweetburger
    • one year ago
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    Then for NaCl it breaks into 2 ions being Na+ and Cl-. Then for CaCl2 it breaks into 3 ions that being 1 Ca2+ and 2Cl-.

  5. sweetburger
    • one year ago
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    This leaves us with the larger i factor of CaCl2.

  6. sweetburger
    • one year ago
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    I think the i is reffered to as the van't hoft factor to be specific.

  7. taramgrant0543664
    • one year ago
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    Yes i is the van't Hoff dissociation factor

  8. anonymous
    • one year ago
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    OK THANKX :D

  9. sweetburger
    • one year ago
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    np :)

  10. anonymous
    • one year ago
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    Hang on, is this from a test?? I think I've solved a problem like this on a test before

  11. sweetburger
    • one year ago
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    Could be but this problem is extremely common in general chemistry courses.

  12. JTfan2000
    • one year ago
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    yes its from a test. cheaters...

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