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Author: Subject: Question regarding colligative properties: Depression in freezing point..
sankalpmittal
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[*] posted on 10-7-2013 at 05:12
Question regarding colligative properties: Depression in freezing point..


A mixture which contains 0.55 grams of camphor and 0.045 grams of an organic solute freezes at 157oC. The solute contains 93.46% of Carbon and 6.54% of Hydrogen by weight. What is the molecular formula of the compound ?

Given:

Molal freezing depression constant Kf of camphor = 37.7
Freezing point of camphor=178.4oC

I just do not want full solution. What I want are the hints in the correct directions. Please help !!

Thanks in advance.. :)

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Metacelsus
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[*] posted on 10-7-2013 at 07:03


1) Calculate the molality of the solution.
2) Calculate the molar mass of the solute.
3) Use the percentages given to find the formula.




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