anonymous
  • anonymous
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
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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sweetburger
  • sweetburger
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?
anonymous
  • anonymous
OKAY KINDA LOST
sweetburger
  • sweetburger
Alrighty so when a salt dissociates into a substance it breaks off into its respective ions.

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sweetburger
  • sweetburger
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-.
sweetburger
  • sweetburger
This leaves us with the larger i factor of CaCl2.
sweetburger
  • sweetburger
I think the i is reffered to as the van't hoft factor to be specific.
taramgrant0543664
  • taramgrant0543664
Yes i is the van't Hoff dissociation factor
anonymous
  • anonymous
OK THANKX :D
sweetburger
  • sweetburger
np :)
anonymous
  • anonymous
Hang on, is this from a test?? I think I've solved a problem like this on a test before
sweetburger
  • sweetburger
Could be but this problem is extremely common in general chemistry courses.
JTfan2000
  • JTfan2000
yes its from a test. cheaters...

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