k' vs kr

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Jorja De Jesus 2C
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k' vs kr

Postby Jorja De Jesus 2C » Mon Mar 09, 2020 12:34 am

What is the difference between k' and ?

Nawal Dandachi 1G
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Re: k' vs kr

Postby Nawal Dandachi 1G » Mon Mar 09, 2020 12:44 am

K' is reverse reaction

Kevin Xu 4F
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Re: k' vs kr

Postby Kevin Xu 4F » Mon Mar 09, 2020 1:21 am

K' represents the placeholder K that is used in psuedo order reactions when the rate law is simplified to only include one species at reaction. For example, if the rate law of a reaction was k[A][B][C] and we wanted to isolate the changes affecting species A, then we could shorten and truncate the rate law into k'[A] where k' is equal to k[B][C]. This is so that it simplifies the equation and turns it into a psuedo first order rate law.

Christineg1G
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Re: k' vs kr

Postby Christineg1G » Mon Mar 09, 2020 9:02 am

k' is the rate of the reverse reaction. kr is the rate constant of a reaction that depicts the rate of a chemical reaction.

805422680
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Re: k' vs kr

Postby 805422680 » Mon Mar 09, 2020 11:39 am

K’ is the rate of the reverse reaction. kr is the rate constant of the reaction

Hannah Romeo 1J
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Re: k' vs kr

Postby Hannah Romeo 1J » Mon Mar 09, 2020 12:05 pm

K’ is the rate of the reverse reaction which equals Kr

Sam McNeill 1E
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Re: k' vs kr

Postby Sam McNeill 1E » Mon Mar 09, 2020 5:03 pm

Additionally, kr/k prime=K, the equilibrium constant.

BCaballero_4F
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Re: k' vs kr

Postby BCaballero_4F » Mon Mar 09, 2020 5:24 pm

kr is the rate constant of the reaction, while k' is the rate of the reverse reaction, their relation can be shown as kr/k'=K

Jainam Shah 4I
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Re: k' vs kr

Postby Jainam Shah 4I » Tue Mar 10, 2020 7:36 pm

K' is the rate constant for the reverse reaction which is why k/k' is the equilibrium constant K

ShastaB4C
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Re: k' vs kr

Postby ShastaB4C » Wed Mar 11, 2020 12:09 am

Is k’ and k prime have to be positive right? Like just because k’ is the reverse reaction doesn’t mean it has a negative sign

Adriana_4F
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Re: k' vs kr

Postby Adriana_4F » Wed Mar 11, 2020 12:17 am

ShastaB4C wrote:Is k’ and k prime have to be positive right? Like just because k’ is the reverse reaction doesn’t mean it has a negative sign


Yes, it always has to be positive because the Arrhenius Equation is always positive.

Madeline Phan 1E
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Re: k' vs kr

Postby Madeline Phan 1E » Wed Mar 11, 2020 12:39 am

k' is the rate of the reverse reaction.

Ashley Tran 2I
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Re: k' vs kr

Postby Ashley Tran 2I » Wed Mar 11, 2020 7:37 am

to clarify, reverse rate means the reciprocal. k'=1/k

Max Madrzyk Dis 4G
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Re: k' vs kr

Postby Max Madrzyk Dis 4G » Wed Mar 11, 2020 7:50 am

k' is just for the reverse reaction and kr is for the forward reaction.


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