Quiz 5 Name(s):

A fuel cell is a device which generates electricity from an oxidation reaction at constant temperature and pressure (i.e. the net reaction is combustion but no flame or explosion is involved; this is similar to biological oxidations). Calculate the maximum electrical work which can be obtained from the oxidation of 1kg of hydrogen by gaseous oxygen in a hydrogen fuel cell under the following conditions: , and pure liquid water is produced at 298K.

Data: The standard free energy of formation of liquid water at 298K is . The molar mass of hydrogen is 2.02g/mol. .

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