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    Working with Mole Fraction and Vapor Pressure

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    A solution of sodium chloride in water has a vapor pressure of 20.3 torr at 25°C. What is the mole fraction of NaCl in this solution.What would be the vapor pressure of this solution at 45°C? The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torr at 45°C

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    <br>According to Rauolts law,
    <br>Pa = Pao * mole fraction of solvent...(1)
    <br>where Pa is the vapour pressure of the solvent,
    <br>Pao is the vapour pressure of the ...

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