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April 23, 2014

Homework Help: Chemistry

Posted by Jordan on Monday, January 24, 2011 at 5:28pm.

The following information is given for ethanol, C2H5OH, at 1atm:

boiling point = 78.4oC Hvap(78.4oC) = 38.6 kJ/mol
melting point = -115oC Hfus(-115oC) = 5.02 kJ/mol
specific heat liquid = 2.46 J/goC


At a pressure of 1 atm, what is H in kJ for the process of condensing a 40.8 g sample of gaseous ethanol at its normal boiling point of 78.4 oC

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