Representing the Rate of Production?

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Discussion Overview

The discussion revolves around the mathematical representation of the rate of production of nitrogen dioxide in the reaction between nitric oxide and oxygen gases. Participants explore various expressions and interpretations of the rate, considering both the reaction stoichiometry and the provided numerical value.

Discussion Character

  • Homework-related
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • Some participants express uncertainty about how to start formulating the mathematical expression for the rate of production.
  • One participant suggests that the rate could be represented as d[NO2]/dt = - d[NO]/dt = -½ d[O2]/dt = 4.0 X 10-3, indicating a possible interpretation of the rate based on the stoichiometry of the reaction.
  • Another participant argues that simply stating r = 4.0 x 10^-3 mol/(L*s) could be considered a correct answer, implying a more straightforward approach to the problem.
  • There is a suggestion that the question may be unclear or that participants may not fully understand it, indicating a potential lack of consensus on the problem's requirements.

Areas of Agreement / Disagreement

Participants do not seem to reach a consensus on the best way to express the rate of production. Multiple interpretations and approaches are presented, reflecting differing views on how to address the homework question.

Contextual Notes

There is ambiguity regarding the clarity of the homework question and whether additional context is needed to formulate a complete answer. The discussion highlights varying levels of understanding among participants.

TheExibo
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Homework Statement



Nitric oxide and oxygen gases react to form nitrogen dioxide gas in the reaction 2NO + O2 -> 2NO2

Write a mathematical expression to represent the rate of production of nitrogen dioxide: 4.0x10-3mol/(L*s)

Homework Equations



r=k[X]m[Y]n

The Attempt at a Solution



Not really sure where to start off.
 
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TheExibo said:

Homework Statement



Nitric oxide and oxygen gases react to form nitrogen dioxide gas in the reaction 2NO + O2 -> 2NO2

Write a mathematical expression to represent the rate of production of nitrogen dioxide: 4.0x10-3mol/(L*s)

Homework Equations



r=k[X]m[Y]n

The Attempt at a Solution



Not really sure where to start off.
Something is missing here.
 
Maybe you don't understand what the question is - nor do we - is this verbatim and from where?

Maybe all they want is d[NO2]/dt = - d[NO]/dt = -½ d[O2]/dt = 4.0 X 10-3

which you did not write because it was too obvious? :oldbiggrin:
 
I would argue even just r=4.0 \times 10^{-3} \frac {mol}{L \times s} qualifies as a correct answer :rolleyes:
 
Borek said:
I would argue even just r=4.0 \times 10^{-3} \frac {mol}{L \times s} qualifies as a correct answer :rolleyes:

Yes but sometimes it is just as well to show off a bit. :oldbiggrin:
 

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