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Overall order

Posted: Wed Feb 28, 2018 4:50 pm
by Nina Gautam 1K
Are we responsible for knowing overall order of a reaction rate if the reaction has a rate law that depends on the concentrations of more than one reactant? Also will we need to know about fractional or negative orders?
Thanks!

Re: Overall order  [ENDORSED]

Posted: Wed Feb 28, 2018 5:09 pm
by Lucian1F
We don't need to know negative or fractional orders but if you know the orders of all the reactants you should know that the overall order is just the sum of those individual orders

Re: Overall order

Posted: Wed Feb 28, 2018 6:39 pm
by Maria1E
To find the overall order, you simply add the orders of all the reactants. For example, the order of [A]^3[B]^1 is 4.

Re: Overall order

Posted: Wed Feb 28, 2018 10:15 pm
by Jennie Fox 1D
After figuring out the order of each reactant, you just add the orders together to get the overall order

Re: Overall order

Posted: Wed Feb 28, 2018 10:36 pm
by JamesAntonios 1E
We will need to know the overall order, if given experimental data (in order to right a rate law). However, for integrated rate laws, as of right now, we are only are dealing with zero, first, and second orders, and only one reactant.

Re: Overall order

Posted: Thu Mar 01, 2018 8:16 am
by Abigail Urbina 1K
To find the overall order of a reaction, you can simply add all the individual orders of each reactant in a reaction.

Re: Overall order

Posted: Sat Mar 03, 2018 12:11 pm
by 104922499 1F
Question #15 in the hw can help with understanding this. reactants [CH3Br] and [OH-] both end in having the order = 1 (n=1, m=1) so if you add n and m you get 2. the OVERALL reaction order is 2 while the individual reactions have the reaction order of 1.