AAMC practice test 3 number 39

[redbird1133]

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I'm super confused on this question:
2 NO2 (g) + F2 (g) --> 2NO2F (g)
The chemical reaction shown above has the following rate law:
Rate = k [NO2][F2]
What is the overall order of this reaction?
0
1st
2nd
3rd

There is a similar question in my Berkeley Review book where it specifically states that if there's more than one molecule, like 2NO2, then it should be [NO2]^2 and that alone counts as 2nd order, so I thought this question was 3rd order, but I guess strictly going off the rate equation they gave it would be 2nd. Can anyone please help clarify?

 

[pepocho]

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[Blueprint MCAT Tutor]

This thread will probably get locked/deleted/whatever since they have a big no-no rule about discussing AAMC questions outside of the official AAMC threads. So I'll answer over here: http://forums.studentdoctor.net/threads/aamc-questions-the-whole-thread-is-spoilers.1057364/