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CRS Question, 6–35
QUESTION
One
source of energy being considered as a replacement for petroleum
fuels is the combustion of hydrogen.
There are several technical considerations to bring this
about, but the heat of combustion reaction is part of the
determination. How much heat, under
standard conditions and 25°C, could be obtained from the combustion
of 2.0 kg of H2?
H2 (g) + ½ O2 (g) ® H2O (l)
1. –572 000 kJ
2. –484 000 kJ
3. –286 000 kJ
4. –242 000 kJ