Slow step

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kevinolvera1j
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

Slow step

Postby kevinolvera1j » Fri Mar 13, 2020 1:51 pm

How slow does the slowest step need to be in order to be considered the slowest step? In other words is there a real time value?

Deepika Reddy 1A
Posts: 125
Joined: Thu Jul 11, 2019 12:15 am

Re: Slow step

Postby Deepika Reddy 1A » Fri Mar 13, 2020 2:44 pm

There's not a certain time that is considered the slowest step. It is just that it is slow relative to the other steps in the mechanism. It needs to be the slowest out of all the steps in the mechanism and then it can be called the slowest step or the rate-determining step.

rabiasumar2E
Posts: 108
Joined: Thu Jul 11, 2019 12:15 am

Re: Slow step

Postby rabiasumar2E » Fri Mar 13, 2020 2:48 pm

There isn't a numerical value that you would use to deduce if it's a slow step or not. It would just be the slowest step out of all of the steps.

Diana A 2L
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Re: Slow step

Postby Diana A 2L » Fri Mar 13, 2020 2:51 pm

^^^ Yes. “Slowness” is relative to the reaction mechanism.

Abby Soriano 1J
Posts: 103
Joined: Sat Aug 24, 2019 12:16 am

Re: Slow step

Postby Abby Soriano 1J » Fri Mar 13, 2020 2:53 pm

The problem will most likely specify which of the steps is the slow step. You will probably be asked if a proposed mechanism matches the observed rate law, but you won't need to actually calculate a value for the slow step.

Kayla Maldonado 1C
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Re: Slow step

Postby Kayla Maldonado 1C » Fri Mar 13, 2020 2:58 pm

Abby Soriano 1J wrote:The problem will most likely specify which of the steps is the slow step. You will probably be asked if a proposed mechanism matches the observed rate law, but you won't need to actually calculate a value for the slow step.

If the rate matches the observed rate law is that the slowest step?

Diana A 2L
Posts: 106
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Re: Slow step

Postby Diana A 2L » Fri Mar 13, 2020 3:16 pm

Kayla Maldonado 1C wrote:
Abby Soriano 1J wrote:The problem will most likely specify which of the steps is the slow step. You will probably be asked if a proposed mechanism matches the observed rate law, but you won't need to actually calculate a value for the slow step.

If the rate matches the observed rate law is that the slowest step?


Yes.

Jared_Yuge
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Slow step

Postby Jared_Yuge » Fri Mar 13, 2020 3:28 pm

If the observed rate law is given then you dont need to worry about identifying the slow step because it will just be the one that matches the given observed rate law


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