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April 23, 2014

Homework Help: Chemistry

Posted by Lauren on Saturday, February 18, 2012 at 10:24pm.

A solution is made by mixing 30.0 mL of ethanol, C2H6O, and 70.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 C?

I got an answer of 15.45 torr and it marked me incorrect and said "Your answer is the the partial vapor pressure contributed by the water component of the solution. Since ethanol is a volatile liquid, it will also contribute to the vapor pressure."

HELP PLEASE!

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