Molar Mass Determination by Depression of Freezing Pt.

Chemistry
Tutor: None Selected Time limit: 1 Day

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

Jul 7th, 2015

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

is there any equation?...........................................

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 7th, 2015

Hi, well the problem more specifically is this.....

A student determined the molar mass of an unknown non-dissociating liquid. She found that the equilibirum temperature of a mixture of ice and pure water was indicated to be +.4 degrees C. She added 9.9g to the mizture and the temperature went to -3.7 degrees C. She poured off the solution through a screen into a beaker and the mass of solution was 84.2 g. 



So how would you find the molality of the unknown liquid?

DeltaTF= -kfm

4.1=-1.86(m) ???????

Jul 7th, 2015

sorry can't handle one with temperature!...please can post it so tutors may check on it first!...don't withdraw please!..only studypool benefitts from easy questions

Jul 7th, 2015

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Jul 7th, 2015
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