Unique Rate  [ENDORSED]


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104922499 1F
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Joined: Fri Sep 29, 2017 7:04 am

Unique Rate

Postby 104922499 1F » Sat Mar 03, 2018 12:13 pm

Can someone clarify what unique rate laws are? I did not understand what Lavelle said during class about this. Thanks!

Sabrina Dunbar 1I
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Re: Unique Rate

Postby Sabrina Dunbar 1I » Sat Mar 03, 2018 12:49 pm

The unique rate is the instantaneous rate of change at any time t during the reaction. Unlike the average rate, which takes into account all of the times at which the reaction proceeds and averages it, the instantaneous rate is specific to a time and therefore it generates a different k value. The general equation used for the unique rate can be written as rate=d[R]/dt while the average rate is rate=∆concentration/∆t. Unique rate laws are specific to each reaction and are confined to a specific time.

Alvin Tran 2E
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Joined: Fri Sep 29, 2017 7:06 am

Re: Unique Rate

Postby Alvin Tran 2E » Sat Mar 03, 2018 1:37 pm

In addition, when you calculate the unique rate, it is the same for all the reactants and products involved in the reaction.

Angela G 2K
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Re: Unique Rate  [ENDORSED]

Postby Angela G 2K » Sat Mar 03, 2018 2:37 pm

For a reaction aA + bB -> cC + dD, where the lowercase letters are the stoichiometric coefficients and the uppercase letters are chemical species, the unique rate law is


This rate law is unique to the reaction and the same for all reactants and products in this reaction.

104922499 1F
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

Re: Unique Rate

Postby 104922499 1F » Thu Mar 15, 2018 8:14 pm

thanks!

Connie2I
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Joined: Fri Sep 29, 2017 7:07 am

Re: Unique Rate

Postby Connie2I » Sat Mar 17, 2018 1:09 am

Is there a way to know when exactly we should be using unique rate?


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