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Molar Enthalpy of Vaporization in Solution and Colligative properties Formulas

The Molar Enthalpy of Vaporization is the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure. And is denoted by ΔHvap. Molar Enthalpy of Vaporization is usually measured using the Kilojoule per Mole for Molar Enthalpy. Note that the value of Molar Enthalpy of Vaporization is always positive.

Formulas to find Molar Enthalpy of Vaporization in Solution and Colligative properties

fxMolar Enthalpy of Vaporization given Boiling Point of Solvent​Go

Solution and Colligative properties formulas that make use of Molar Enthalpy of Vaporization

fxEbullioscopic Constant using Molar Enthalpy of Vaporization​Go
fxBoiling point of Solvent given Ebullioscopic Constant and Molar Enthalpy of Vaporization​Go
fxMolar Mass of Solvent given Ebullioscopic Constant​Go
fxRelative Lowering of Vapour Pressure given Elevation in Boiling Point​Go
fxElevation in Boiling Point given Vapour Pressure​Go
fxElevation in Boiling Point given Depression in Freezing Point​Go
fxElevation in Boiling Point given Osmotic Pressure​Go
fxOsmotic Pressure given Elevation in Boiling Point​Go
fxElevation in Boiling Point given Relative Lowering of Vapour Pressure​Go
fxDepression in Freezing Point given Elevation in Boiling Point​Go

List of variables in Solution and Colligative properties formulas

fx Solvent Boiling Point ​Go
fx Molar Mass of Solvent ​Go
fx Ebullioscopic Constant of Solvent ​Go

FAQ

What is the Molar Enthalpy of Vaporization?
The Molar Enthalpy of Vaporization is the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure. Molar Enthalpy of Vaporization is usually measured using the Kilojoule per Mole for Molar Enthalpy. Note that the value of Molar Enthalpy of Vaporization is always positive.
Can the Molar Enthalpy of Vaporization be negative?
No, the Molar Enthalpy of Vaporization, measured in Molar Enthalpy cannot be negative.
What unit is used to measure Molar Enthalpy of Vaporization?
Molar Enthalpy of Vaporization is usually measured using the Kilojoule per Mole[kJ/mol] for Molar Enthalpy. Joule per Mole[kJ/mol] are the few other units in which Molar Enthalpy of Vaporization can be measured.
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