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May 29, 2015

Homework Help: Chemistry

Posted by Johnny on Thursday, April 25, 2013 at 11:52pm.

Ethanol (C2H5OH) has been produced since antiquity by the fermentation of fruits and vegetables. Given the following data, if 5.87 kJ of energy are transferred to 13.3 g of frozen ethanol at -130.0 C, what is the final temperature of the sample?

Heat capacity (solid) = 0.97 J/C g
Heat capacity (liquid) = 2.72 J/C g
Heat capacity (gas) = 2.42 J/C g
Normal melting point = −114.0 C
Normal boiling point = 78.4 C
Heat of fusion = 7.61 kJ/mol
Heat of vaporization = 39.3 kJ/mol

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