How Do You Determine the Heat of Reaction for CO + NO2 Reaction?

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Discussion Overview

The discussion focuses on determining the heat of reaction for the chemical reaction between carbon monoxide (CO) and nitrogen dioxide (NO2), which produces carbon dioxide (CO2) and nitric oxide (NO). Participants explore the activation energy for the forward reaction and seek to calculate the heat of reaction and the activation energy for the reverse reaction.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant states that the activation energy for the forward reaction is 135 kJ/mol of CO reacted and asks for help in determining the heat of reaction.
  • Another participant recalls concepts from kinetics related to flipping equations and suggests that this might be relevant to the problem.
  • Some participants express uncertainty about how the activation energy relates to the heat of reaction, noting that the heat of reaction is not close to the activation energy value.
  • A participant shares a link to a resource that provides information on calculating reaction enthalpy, indicating that it may be helpful for the discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on how to calculate the heat of reaction or its relationship to the activation energy, indicating that multiple views and uncertainties remain in the discussion.

Contextual Notes

There are limitations regarding the assumptions made about the relationship between activation energy and heat of reaction, as well as the need for additional data to resolve the calculations.

richi
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Can somebody help me with this please?

CO + NO2 ----> CO2 + NO the activation energy for the forward reaction is 135 kJ/mol of CO reacted.
a) determine the heat of reaction
b) fron the data given , and the Delta Hr for the reaction , determine the activation energy for the reverse reaction.

Thanks
 
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Do you have any ideas about the problem? Do you remember Kinetics and flipping equations and what was involved there?
 
Stevedye56 said:
Do you have any ideas about the problem? Do you remember Kinetics and flipping equations and what was involved there?

I know the molecules in the reaction need 135kJ to start the reaction. But when determining heat of reaction, the number is not even close to 135 kJ.
 
This site has some good information on calculating the reaction enthalpy. http://www.science.uwaterloo.ca/~cchieh/cact/c120/heatreac.html
 
richi said:
I know the molecules in the reaction need 135kJ to start the reaction. But when determining heat of reaction, the number is not even close to 135 kJ.

Thanks it is helpful.
 

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