Question

Q7.How does the presence of impurities affect the boiling point and freezing point of a substance?

Answer 1

Hey! Here is ur answer...

The presence of impurities affects the surface tension and vapor pressure of the substance (it wouldn't be pure if it contained impurities). For something to boil, the vapor pressure must be overcome; the intermolecular forces holding the liquid together must be diminished by the increased heat and pressure of boiling.

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