How does the boiling point change with the impurities in the liqiud ?

1.	How does the boiling point change with the impurities in the liqiud ?
Answer» When an\xa0impurity\xa0is added to substance,\xa0its Boiling point\xa0is elevated. Reason: The elevation[increase] in\xa0boiling point\xa0increases with the increases in concentration of the solute because on adding the solute, vapor pressure of solution becomes lower than pure solvent.\xa0Adding\xa0impurities\xa0to a solution, in most cases, increases the\xa0boiling point\xa0of the solution. This occurs because the presence of\xa0impurities\xa0decreases the number of water molecules available to become vaporized during\xa0boiling.

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