Consider four possible liquid fuels used in vehicles C8H18 Octane ...

Consider four possible liquid fuels used in vehicles. â€¢ C8H18 Octane - gasoline â€¢ C12H26 Dodecane -...

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Chemistry

Consider four possible liquid fuels used in vehicles.
â€¢ C8H18 Octane - gasoline
â€¢ C12H26 Dodecane - diesel
â€¢ CH3OH ethanol - gasoline additive
â€¢ CH3NO2 nitromethane - racing fuel
Determine the heat released upon combustion with O2 for 15gallons of each fuel.
Hint: Perform the following.
1. Balance the combustion reaction for each fuel. The productsare CO2(g), H2O(g); for nitromethane, N produces N2(g) as one ofthe products.
2. Determine the enthalpy of each combustion reaction.
3. Determine the enthalpy of combustion for 15 gallons of fuelreactant.
4. Which fuel gives the most heat upon combustion?
5. Does adding ethanol to gasoline increase or decrease gasmileage?

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3.7 Ratings (427 Votes)

a Balanced equations 2C8H18 25O2 16CO2 18H2O 2C12H26 37O2 24CO2 26H2O 2CH3OH 3O2 2CO2 4H2O 4CH3NO2 3O2 4CO2 6H2O 2N2 C2H5OH 3O2 2CO2 3H2O 2 Heat released by combustion of a C8H18 See Answer

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