Question
For any solvent, the molal gradient constants value is certain. Why?
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Answer
The molal elevation constant is calculated from the following formula :
All the value present in this formula, R (gas constant or solution constant), $M _1$ (Molar mass of solvent, $T _{ b }$ (boiling point of solvent) and $\Delta_{\text {vaporisation }} H$ (enthalpy of vaporisation) of solvent are fixed, hence molar elevation constant $\left( K _{ b }\right)$ is also fixed.
All the value present in this formula, R (gas constant or solution constant), $M _1$ (Molar mass of solvent, $T _{ b }$ (boiling point of solvent) and $\Delta_{\text {vaporisation }} H$ (enthalpy of vaporisation) of solvent are fixed, hence molar elevation constant $\left( K _{ b }\right)$ is also fixed.
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