Discussion Overview
The discussion revolves around calculating the heat of combustion of graphite when combusted incompletely, specifically focusing on the generation of carbon monoxide (CO) and carbon dioxide (CO2). Participants are attempting to determine the correct heat released based on the combustion reactions and the stoichiometry involved.
Discussion Character
- Homework-related
- Mathematical reasoning
- Debate/contested
Main Points Raised
- One participant states the heat of combustion for graphite and CO, suggesting a calculation based on these values.
- Another participant questions the initial calculations, prompting a reevaluation of the moles of carbon burned and the gaseous products formed.
- Participants agree that 1 mole of carbon is combusted, producing 0.5 moles of CO and 0.5 moles of CO2.
- There is a calculation presented for the heat released based on the combustion reactions, leading to a proposed total of -535.5 kJ/mol.
- One participant suggests calculating the heat for half a mole of CO, leading to a value of 197 kJ/mol, but there is confusion regarding the total heat released based on the stoichiometry of the reactions.
Areas of Agreement / Disagreement
Participants generally agree on the stoichiometry of the combustion reactions but disagree on the calculation of the total heat released, leading to multiple interpretations of the results.
Contextual Notes
There are unresolved aspects regarding the assumptions made in the calculations, particularly concerning the heat values used and the interpretation of the combustion process.