Representing the Rate of Production?

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The discussion revolves around deriving a mathematical expression for the rate of production of nitrogen dioxide from the reaction 2NO + O2 -> 2NO2. The rate of production is given as 4.0x10-3 mol/(L*s). Participants suggest that the expression could simply be r=4.0 x 10^-3 mol/(L*s) or involve more detailed derivatives like d[NO2]/dt. There is some confusion about the question's clarity and whether additional details are necessary for a complete answer. Ultimately, the conversation highlights the importance of both simplicity and thoroughness in presenting chemical rate equations.
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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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