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With so much instability in the current worldoilmarket, many are seeking out alternative fuels to powercars.Ethanol is a possible alternative fuel.
The combustion of ethanol is thefollowingequation:
C2H5OH(l) + 3 O2(g) ® 2CO2(g) + 3 H2O)
The combustion of octane (C8H18) provides 5509kJ/mol ofenergy.
How many grams of ethanol would berequiredto produce the same amount of energy as 1 moleofoctane?
Equations DHf (kJ/mol)
C(s) + O2(g) ®CO2(g) -394
H2(g) + ½ O2(g) ®H2O(?) -285
2C(s) + 3 H2(g) + ½ O2(g) ® C2H5OH(?) -278
H2(g) + ½ O2(g) ®H2O(g) -242
With so much instability in the current worldoilmarket, many are seeking out alternative fuels to powercars.Ethanol is a possible alternative fuel.
The combustion of ethanol is thefollowingequation:
C2H5OH(l) + 3 O2(g) ® 2CO2(g) + 3 H2O)
The combustion of octane (C8H18) provides 5509kJ/mol ofenergy.
How many grams of ethanol would berequiredto produce the same amount of energy as 1 moleofoctane?
Equations DHf (kJ/mol)
C(s) + O2(g) ®CO2(g) -394
H2(g) + ½ O2(g) ®H2O(?) -285
2C(s) + 3 H2(g) + ½ O2(g) ® C2H5OH(?) -278
H2(g) + ½ O2(g) ®H2O(g) -242
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