when a spoonful of common salt is added to water it
the solution on evaporation leaves behind white
the above experiment is an example of
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When common salt is dissolved in water, Boiling point of the solution increases. The boiling point of a substance is the temperature at which the vapor pressure of the substance equals atmospheric pressure. A solution containing a non-volatile solute, having a lower vapor pressure than the pure solvent, must be at a higher temperature before its vapor pressure equals atmospheric pressure and it boils. Thus, the boiling point of a solution containing a non-volatile solute is higher than that of the pure solvent. This effect is called boiling point elevation.
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