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Answer: The so-called hydrogen economy is based on
Chapter 6, Problem 92P(choose chapter or problem)
The so-called hydrogen economy is based on hydrogen produced from water using solar energy. The gas is then burned as a fuel:
\(2 \mathrm{H}_{2}(g)+\mathrm{O}_{2}(\mathrm{g}) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l})\)
A primary advantage of hydrogen as a fuel is that it is non polluting. A major disadvantage is that it is a gas and therefore is harder to store than liquids or solids. Calculate the volume of hydrogen gas at \(25^{\circ} \mathrm{C}\) and 1.00 atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane \(\left(C_{8} H_{18}\right)\). The density of octane is 2.66 kg/gal, and its standard enthalpy of formation is -249.9 kJ/mol.
Questions & Answers
QUESTION:
The so-called hydrogen economy is based on hydrogen produced from water using solar energy. The gas is then burned as a fuel:
\(2 \mathrm{H}_{2}(g)+\mathrm{O}_{2}(\mathrm{g}) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l})\)
A primary advantage of hydrogen as a fuel is that it is non polluting. A major disadvantage is that it is a gas and therefore is harder to store than liquids or solids. Calculate the volume of hydrogen gas at \(25^{\circ} \mathrm{C}\) and 1.00 atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane \(\left(C_{8} H_{18}\right)\). The density of octane is 2.66 kg/gal, and its standard enthalpy of formation is -249.9 kJ/mol.
ANSWER:Step 1 of 4
Here, we are going to the volume of hydrogen gas at \(25^{\circ} \mathrm{C}\) and 1.00 atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane (\(\mathbf{C}_{8} \mathbf{H}_{18}\)).