Molar Mass Determination by Depression of Freezing Pt.

label Chemistry
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Hello, I was hoping someone could help me figure out how to find the molality of an unknown liquid??

Oct 17th, 2017

Thank you for the opportunity to help you with your question!

for finding molar mass  one should know the freezing points of pure liquid and its solution with water and any other substance freezing point depression.

then use this formula
delta Tf = Kf* molality 
delta Tf is the difference between freezing point. 

Kf is constant which is -1.86

you will get molality of the unknown liquid

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Oct 17th, 2017
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