Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Question regarding colligative properties: Depression in freezing point..
sankalpmittal
Harmless
*




Posts: 49
Registered: 12-1-2013
Member Is Offline

Mood: Confused....

[*] 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.. :)

View user's profile View All Posts By User
Metacelsus
International Hazard
*****




Posts: 2532
Registered: 26-12-2012
Location: Boston, MA
Member Is Offline

Mood: Double, double, toil and trouble

[*] 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.




As below, so above.

My blog: https://denovo.substack.com
View user's profile View All Posts By User

  Go To Top