Ethanol is a possible fuel. Use average bond energies to calculate delta Hrxn fo

Question

Ethanol is a possible fuel. Use average bond energies to calculate delta Hrxn for the combustion of ethanol. CH3CH2OH(g) + 3 O2(g) rightarrow 2 CO2(g) + 3 H20(g) ANSWER 1: Deduction: -3% delta Hrxn = 1277.6 kJ/mol ANSWER 2: Deduction: -3% delta Hrxn = -1277.6 kJ/mol Not quite. Check through your calculations: you may have made a rounding error or used the wrong number of significant figures. ANSWER 3: Deduction: -3% delta Hrxn = - 2010 kJ/mol ANSWER 4: Deduction: -3% delta Hrxn = -1277.3 kJ/mol Not quite. Check through your calculations: you may have made a rounding error or used the wrong number of significant figures. ANSWER 5: Deduction: -3% delta Hrxn = -1278 kJ/mol Not quite. Check through your calculations: you may have made a rounding error or used the wrong number of significant figures. ANSWER 6: Deduction: -3% delta Hrxn = -1.277-103 kJ/mol

Explanation / Answer

-1250 kJ/mole

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