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### Methanol (CH $_{3} \mathrm{OH}$ ) is used as a fu…

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Oklahoma State University

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Problem 79

Ethanol $\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)$ is blended with gasoline as an automobile fuel. (a) Write a balanced equation for the combustion of liquid ethanol in air. (b) Calculate the standard enthalpy change for the reaction, assuming $\mathrm{H}_{2} \mathrm{O}(g)$ as a product.
(c) Calculate the heat produced per liter of ethanol by combustion of ethanol under constant pressure. Ethanol has a density of 0.789 $\mathrm{g} / \mathrm{mL}$ (d) Calculate the mass of $\mathrm{CO}_{2}$ produced per ky of heat emitted.

Answer
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