Understanding n intuitively

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Tatum_Bernat_1E
Posts: 21
Joined: Sat Jul 09, 2016 3:00 am

Understanding n intuitively

Postby Tatum_Bernat_1E » Wed Feb 08, 2017 4:46 pm

Today in class, professor Lavelle went through how to understand that n would be 1 intuitively in an example from the course reader. In the course reader, it then proceeds how to get the number mathematically. I follow the math but I failed to understand how he knew the value of n before doing the math. Maybe I am missing a critical conceptual point that would lead to this conclusion. Can someone please explain how you would know what n is before doing the math for it? Thanks!

mikezargari
Posts: 20
Joined: Wed Sep 21, 2016 2:56 pm
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Re: Understanding n intuitively

Postby mikezargari » Wed Feb 08, 2017 5:42 pm

Just compare the concentration of one of the reactants, say [NH4+1] to the rate. After you've recognized that as the concentration doubles your rate doubles you can say that 2^n=2. Therefore, n must equal 1. This logic provides you with a shortcut.Hope this helps.


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