## k' vs kr

Jorja De Jesus 2C
Posts: 121
Joined: Sat Jul 20, 2019 12:15 am

### k' vs kr

What is the difference between k' and ?

Nawal Dandachi 1G
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Joined: Sat Sep 28, 2019 12:16 am

### Re: k' vs kr

K' is reverse reaction

Kevin Xu 4F
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Joined: Fri Aug 09, 2019 12:16 am

### Re: k' vs kr

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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Joined: Fri Aug 09, 2019 12:15 am
Been upvoted: 1 time

### Re: k' vs kr

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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Joined: Sat Sep 14, 2019 12:16 am

### Re: k' vs kr

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

Hannah Romeo 1J
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Joined: Thu Jul 11, 2019 12:16 am

### Re: k' vs kr

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

Sam McNeill 1E
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Joined: Sat Aug 24, 2019 12:17 am

### Re: k' vs kr

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

BCaballero_4F
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Joined: Wed Nov 14, 2018 12:22 am

### Re: k' vs kr

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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Joined: Fri Aug 30, 2019 12:16 am

### Re: k' vs kr

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

ShastaB4C
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Joined: Thu Sep 26, 2019 12:18 am

### Re: k' vs kr

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

Posts: 74
Joined: Fri Sep 28, 2018 12:29 am

### Re: k' vs kr

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.

Posts: 103
Joined: Sat Aug 17, 2019 12:18 am

### Re: k' vs kr

k' is the rate of the reverse reaction.

Ashley Tran 2I
Posts: 108
Joined: Thu Jul 11, 2019 12:17 am

### Re: k' vs kr

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