vapor pressure

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762 + vp ethanol = total pressure.
Dalton's Law of partial pressures.

The total pressure in a flask containing air and ethanol at 257C is 882 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is ?mm Hg.

  • vapor pressure -

    882-762=120mm Hg

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