Chemistry

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.

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  1. Just subtract the PARTIAL pressure of air from the total pressure. The problem should have stated that 762 mm Hg was the partial pressure of air.

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