Posted by Sammy on Thursday, August 27, 2009 at 11:34pm.
If you assume that freezing point depression is dependent on just dissociation, then
DeltaTf= Kf*molality*(percentdissociation)*number particlesperformula
Here, the particlesperformula is 2 (Na + Cl), so solve for percent dissociation, and you will get a decimal percent. multiply itby 100 to get percent. In my head, get about 90 percent here.
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