2. Ethanol (C₂H5OH) is currently blended with gasoline as an automobile fuel. (a) Write a balanced equation for the combustion of ethanol in air. Assume the products are carbon dioxide and water vapor. C₂H5OH+30₂-200₂ + 3H₂₂0 (b) Calculate the standard enthalpy change for the reaction. (2(-393.5) + 3(-241.823)-((-277.7) + 3(0³) -1234.8 kJ

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Chapter4: Energy And Chemical Reactions
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I need help understanding and knowing if I’m correct on these questions over Hess’ Law and calorimetry
2. Ethanol (C₂H5OH) is currently blended with gasoline as an automobile fuel.
(a) Write a balanced equation for the combustion of ethanol in air. Assume the products
are carbon dioxide and water vapor.
C₂H5OH+30₂-200₂ + 3H₂0
(b) Calculate the standard enthalpy change for the reaction.
(2(-393.5) + 3(-241.823)-((-277.7) + 3(0>)
-1234.8 kJ
Transcribed Image Text:2. Ethanol (C₂H5OH) is currently blended with gasoline as an automobile fuel. (a) Write a balanced equation for the combustion of ethanol in air. Assume the products are carbon dioxide and water vapor. C₂H5OH+30₂-200₂ + 3H₂0 (b) Calculate the standard enthalpy change for the reaction. (2(-393.5) + 3(-241.823)-((-277.7) + 3(0>) -1234.8 kJ
نسان -
(c) Calculate the heat produced per liter of ethanol by combustion of ethanol under
constant pressure. Ethanol has a density of 0.789 g/mL
(d) Calculate the mass of CO2 produced per kJ of heat emitted.
Transcribed Image Text:نسان - (c) Calculate the heat produced per liter of ethanol by combustion of ethanol under constant pressure. Ethanol has a density of 0.789 g/mL (d) Calculate the mass of CO2 produced per kJ of heat emitted.
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