Enter your answer in the provided box. Ethanol (C2H5OH) and gasoline (assumed to be all octane, C8H18) are both used...

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Enter your answer in the provided box.

Ethanol(C₂H₅OH)and gasoline (assumed to be all octane,C₈H₁₈) areboth used as automobile fuel. If gasoline is selling for $3.19/gal,what would the price of ethanol have to be in order to provide thesame amount of heat per dollar? The density andÎ”H
o
f
of octane are 0.7025 g/mL and âˆ’249.9 kJ/mol and thedensity and Î”H
o
f
of ethanol are 0.7894 g/mL and âˆ’277.0 kJ/mol,respectively. Assume that the products of combustion areCO₂(g) andH₂O(l). (1gal = 3.785 L)

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3.8 Ratings (689 Votes)

To compare this you need to calculate the heat of combustion for both ethanol and gasoline the balanced chemical equation for combustion of gasoline C8H18l 252O2g 8CO2g 9H20g Calculate heat of combustion of Octane Refer to your text book fot the standard values delta H of Combustion delta H formation of products delta H formation of reactants 8delta H CO2g 9delta H H20g 1delta H C8H18l 25delta H O2 839352 92418 12499 250 See Answer

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