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Author Question: Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. The standard ... (Read 71 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
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Labomba

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Reply 2 on: Nov 5, 2023
Wow, this really help

softEldritch

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Reply 3 on: Yesterday
:D TYSM

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