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Textbook Expert
Textbook ExpertVerified Tutor
9 Nov 2021

Given information

( from the table 12.7)

   

   

Step-by-step explanation

Step 1.

A solution's boiling point is always higher than that of the pure solvent. The rise in boiling point of a dilute solution is exactly proportional to the molar concentration of solute in the solution.

 
 
Here, is molality and is called Boiling Point Elevation Constant or Molal Elevation Constant (Ebullioscopic Constant).
The unit of  is .  
 
If of solute of molar mass is dissolved in of solvent.
Then molality of the solution is given as follows:
 
Substituting the value of molality in the previous equation we get:
 
Or,  

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