General Meaning of "Zero Order" Reactions


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Layal Suboh 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

General Meaning of "Zero Order" Reactions

Postby Layal Suboh 1I » Wed Mar 06, 2019 2:00 pm

What does it mean for a reaction to have zero order?

Emma Scholes 1L
Posts: 62
Joined: Fri Sep 28, 2018 12:18 am

Re: General Meaning of "Zero Order" Reactions

Postby Emma Scholes 1L » Wed Mar 06, 2019 2:21 pm

In a zero order reaction, the rate of the reaction does not depend on the concentration of the reactant.

Danielle_Gallandt3I
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Joined: Fri Sep 28, 2018 12:24 am

Re: General Meaning of "Zero Order" Reactions

Postby Danielle_Gallandt3I » Wed Mar 06, 2019 4:26 pm

This typically occurs when the reactant concentration is already very high, so adding more reactant doesn't change the rate

Yvonne Du
Posts: 64
Joined: Fri Sep 28, 2018 12:23 am

Re: General Meaning of "Zero Order" Reactions

Postby Yvonne Du » Wed Mar 06, 2019 5:17 pm

Danielle_Gallandt3I wrote:This typically occurs when the reactant concentration is already very high, so adding more reactant doesn't change the rate

Thank you for clarifying!

Jessica Tsui 1H
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Joined: Fri Sep 28, 2018 12:21 am

Re: General Meaning of "Zero Order" Reactions

Postby Jessica Tsui 1H » Wed Mar 06, 2019 7:20 pm

Zero-order reactions can also occur when there is a catalyst, so the reaction would depend on the catalyst instead of the concentration of reactant.

Celine Cheng 1H
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Re: General Meaning of "Zero Order" Reactions

Postby Celine Cheng 1H » Wed Mar 06, 2019 7:47 pm

If the reaction rate is dependent on a catalyst, does that mean the substrate has to be in high concentration as well?

Saman Andalib 1H
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Joined: Fri Sep 28, 2018 12:16 am

Re: General Meaning of "Zero Order" Reactions

Postby Saman Andalib 1H » Wed Mar 06, 2019 8:31 pm

This means that the reaction rate does not depend on the particular amount of a specific reactant (that is 0 order).

haleyervin7
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: General Meaning of "Zero Order" Reactions

Postby haleyervin7 » Wed Mar 06, 2019 9:00 pm

Celine Cheng 1H wrote:If the reaction rate is dependent on a catalyst, does that mean the substrate has to be in high concentration as well?

Dr. Lavelle said to assume the catalyst/enzyme is saturated with substrate (meaning it is already working at maximum capacity) so adding substrate doesn't change the rate.


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