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Why does a solution containing non-volatile …

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Why does a solution containing non-volatile solute have higher boiling point then the pure solute.why it the evolution of boiling point a colligative properties.
  • 1 answers

Yogita Ingle 6 years, 1 month ago

The boiling point of substance can be defined as, it is the temperature at which the vapour pressure of the substance equal to atmospheric pressure. According to Raoult's law, the vapour pressure of a solvent decreases in the presence of a non-volatile solute. Thus, the vapour pressure of a solution containing a non-volatile solute requires a high temperature to become equal to the atmospheric pressure. That is why the boiling point of a solution containing a non-volatile solute increases. Thus, the solution containing a non-volatile solute has a higher boiling point than a pure solvent. Example of non-volatile solute sugar, NaCl. etc.

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