Representing the Rate of Production?

1. Mar 25, 2015

TheExibo

1. The problem statement, all variables and given/known data

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)

2. Relevant equations

r=k[X]m[Y]n

3. The attempt at a solution

Not really sure where to start off.

2. Mar 25, 2015

Quantum Defect

Something is missing here.

3. Mar 26, 2015

epenguin

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?

4. Mar 26, 2015

Staff: Mentor

I would argue even just $r=4.0 \times 10^{-3} \frac {mol}{L \times s}$ qualifies as a correct answer

5. Mar 26, 2015

epenguin

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