why at high temperature , vapor pressure of a solution containing non volatile solute and volatile solvent is equal to external pressure
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The boiling point of the solution is higher because the nonvolatile solute lowers the vapor pressure of the solvent. Thus, the temperature must be increased to a value greater than the boiling point of the pure solvent to achieve a vapor pressure equal to atmospheric pressure.
kaushikdey:
thanks very much
that means at the boiling point of the pure solvents, their vapor pressure is equal to external pressure, at equilibrium?
please answer this
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