Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • What are ebullioscopic constant and cryoscopic constant?

What are ebullioscopic constant and cryoscopic constant?

Answers (1)

The ebullioscopic constant Kb relates molality b to boiling point elevation. It is the ratio of the latter to the former. A formula to compute the ebullioscopic constant is:

{\displaystyle K_{\text{b}}={\frac {RT_{\text{b}}^{2}M}{\Delta H_{\text{vap}}}}}

The cryoscopic constant, Kf, relates molality to freezing point depression (which is a colligative property). It is the ratio of the latter to the former. The value of Kf, which depends on the nature of the solvent can be found out by the following equation:

{\displaystyle K_{f}={\frac {R\cdot M\cdot T_{f}^{2}}{\Delta _{\mathrm {fus} }H}}}

Posted by

Ankit Dutt

View full answer

Similar Questions

Latest Question