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Author Question: Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. The standard ... (Read 18 times)

Labomba

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on: Nov 5, 2023

Question 1

Ethanol (C2H5OH) burns according to the equation
         C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), ΔH°rxn = –1367 kJ/mol.
How much heat is released when 35.0 g of ethanol is burned?
◦ 9.61 × 10–4 kJ
◦ 1,040 kJ
◦ 1,367 kJ
◦ 1,797 kJ
◦ 4.78 × 104 kJ

Question 2

Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. The standard heat of combustion of ethanol, C2H5OH(l), is –1366.8 kJ/mol.  Given that ΔH°f[CO2(g)] = –393.5 kJ/mol and ΔH°f[H2O(l)] = –285.8 kJ/mol, what is the standard enthalpy of formation of ethanol?
◦ –687.6 kJ/mol
◦ –277.6 kJ/mol
◦ 687.6 kJ/mol
◦ 1,367 kJ/mol
◦ 3,010 kJ/mol
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
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Marked as best answer by Labomba on Nov 5, 2023

tharris7314

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Reply #1 on: Nov 5, 2023
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Labomba

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Reply 2 on: Nov 5, 2023
YES! Correct, THANKS for helping me on my review

dreamfighter72

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Reply 3 on: Yesterday
Wow, this really help

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