Unique rate?

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chloewinnett1L
Posts: 55
Joined: Fri Sep 28, 2018 12:20 am

Unique rate?

Postby chloewinnett1L » Mon Mar 11, 2019 12:52 am

Is the "unique rate" of a reaction the same thing as k? If not, what is it and how do we find it if it isn't given?

GavinAleshire1L
Posts: 29
Joined: Fri Sep 28, 2018 12:21 am

Re: Unique rate?

Postby GavinAleshire1L » Mon Mar 11, 2019 1:25 am

No, the unique rate is the rate of disappearance of a reactant/formation of a product divide by its stoichiometric coefficient. This rate should be the same for all species in the reaction.

caseygilles 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

Re: Unique rate?

Postby caseygilles 1E » Mon Mar 11, 2019 10:38 pm

Unique rate is rate of formation multiplied by the negative inverse of its coefficient--- aA +bB---> bB + cC would have unique rate= (-1/a) * (d[A]/dt).
This is different from k, which is the rate constant for a reaction.

Adam Vuilleumier 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: Unique rate?

Postby Adam Vuilleumier 2K » Mon Mar 11, 2019 10:49 pm

Unique rate takes into account the stoichiometric coefficients of each product/reactant. This means that the unique rate of any product or any reactant will be the same.

Jordan Lo 2A
Posts: 85
Joined: Fri Sep 28, 2018 12:25 am

Re: Unique rate?

Postby Jordan Lo 2A » Mon Mar 11, 2019 11:00 pm

Is this like the elementary steps reactions where you use the coefficient to determine the power of the concentration?

Ashe Chen 2C
Posts: 31
Joined: Mon Jan 07, 2019 8:23 am

Re: Unique rate?

Postby Ashe Chen 2C » Tue Mar 12, 2019 3:38 pm

The unique rate depends on the stoichiometric coefficients of the products or reactants, which differs from k, the rate constant.

rkang00
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

Re: Unique rate?

Postby rkang00 » Tue Mar 12, 2019 6:20 pm

Is the 'unique' of the unique rate indicating that every single rxn has its very own unique rate, like a human fingerprint?

Brian Chang 2H
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Unique rate?

Postby Brian Chang 2H » Wed Mar 13, 2019 12:33 pm

Unique rate is just the "normal rate" of formation of a product, multiplied by the negative inverse of its stoichiometric coefficient.


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