C. Once it is in the vapor phase, the methanol can react with oxygen in the air according to: CH3OH (g) + 3/2 O₂ (g) → CO₂ (g) + 2H₂O(g) Use average bond enthalpies to estimate the enthalpy change in this reaction for 1 mol of methanol reacting. Bond C - H O-H O=0 C=O C-O Bond Enthalpy (kJ/mol) 413 463 498 728 351 d. Using heat of formation values, ^Hºf, the actual enthalpy change for this reaction is determined to be -676.49 kJ/mol. Using this value, calculate the heat released when 1.00 kg of gaseous methanol is burned in the air at constant pressure.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.44QE
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C. Once it is in the vapor phase, the methanol can react with oxygen in the air according to:
CH3OH (g) + 3/2 O₂ (g) → CO2 (g) + 2H₂O(g)
Use average bond enthalpies to estimate the enthalpy change in this reaction for 1 mol of
methanol reacting.
Bond
C-H
O-H
O=O
C=O
C-O
Bond Enthalpy (kJ/mol)
413
463
498
728
351
d. Using heat of formation values, AHºf, the actual enthalpy change for this reaction is determined to
be -676.49 kJ/mol. Using this value, calculate the heat released when 1.00 kg of gaseous
methanol is burned in the air at constant pressure.
Transcribed Image Text:C. Once it is in the vapor phase, the methanol can react with oxygen in the air according to: CH3OH (g) + 3/2 O₂ (g) → CO2 (g) + 2H₂O(g) Use average bond enthalpies to estimate the enthalpy change in this reaction for 1 mol of methanol reacting. Bond C-H O-H O=O C=O C-O Bond Enthalpy (kJ/mol) 413 463 498 728 351 d. Using heat of formation values, AHºf, the actual enthalpy change for this reaction is determined to be -676.49 kJ/mol. Using this value, calculate the heat released when 1.00 kg of gaseous methanol is burned in the air at constant pressure.
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