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Answer to Question #185873 in General Chemistry for Catherine
Question #185873
What is the vapor pressure of an aqueous solution that has a solute mole fraction of 0.300? The vapor pressure of water is 25.756 mmHg at 25 °C.
Expert's answer
χsolvent = 1.0000 - 0.3000 = 0.7000
Use Raoult's Law:
Psolution = (χsolvent) (P°solvent)
x = (0.7000) (25.756)
x = 18.03 mmHg
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