wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The molal elevation constant refers to which elevation in boiling point?


Open in App
Solution

Elevation of boiling point:

  • Let Tb0 be the boiling point of pure solvent and Tb be the boiling point of the solution.
  • The increase in the boiling point Tb=Tb-Tb0is known as the elevation of the boiling point.
  • "The elevation of boiling point Tb is directly proportional to the molal concentration of the solute in a solution." The expression can be given as:

TbmorTb=Kb.m

  • where m is the molality and Kb is the boiling point elevation constant or molal elevation constant.

Units of molal elevation constant:

  • It is expressed in Kkgmol-1.

The molal elevation constant is the elevation in boiling point produced on dissolving one-mole solute in 1000g of solvent.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Depression in Freezing Point
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon