Why does adding salt to water raise its boiling point?

Dissolved particles disrupt the solvent's vapor pressure, requiring a higher temperature to reach boiling — the same colligative property behind freezing point depression, in reverse direction.

Boiling Point Elevation Calculator

Calculate the boiling point elevation of a solvent caused by a dissolved solute, an example of a colligative property.

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Results

Boiling Point Elevation: 0.512 °C

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Formula

ΔTb = Kb × m × i

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Colligative Properties: Why Salt Melts Ice and Raises Boiling Points

Freezing point depression, boiling point elevation, osmolarity, and molar volume — four calculations built on the same underlying colligative-property idea.

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