Meaning of Zero, First, and Second Order?


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Michelle Wang 4I
Posts: 63
Joined: Fri Sep 28, 2018 12:27 am

Meaning of Zero, First, and Second Order?

Postby Michelle Wang 4I » Sun Mar 10, 2019 9:24 pm

What exactly does it mean if a reaction is zero, first, or second order?

Ethan Yi 1K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Meaning of Zero, First, and Second Order?

Postby Ethan Yi 1K » Sun Mar 10, 2019 9:29 pm

the order of a reaction depends on how the concentrations of reactants affect the rate of the reaction. if the reactant concentration does not impact the rate, it is zero order (rate = k). if there is a linear relationship, where the rate and concentration have a direct correlation, it is first order (rate = k[A]). second order would be rate = k[A]^2

Ariel Cheng 2I
Posts: 67
Joined: Fri Sep 28, 2018 12:29 am

Re: Meaning of Zero, First, and Second Order?

Postby Ariel Cheng 2I » Sun Mar 10, 2019 9:43 pm

Remember you can also relate order numbers to individual reactants themselves or also the overall reaction order.

lizettelopez1F
Posts: 29
Joined: Fri Sep 28, 2018 12:19 am

Re: Meaning of Zero, First, and Second Order?

Postby lizettelopez1F » Sun Mar 10, 2019 10:35 pm

To figure out the order, you would keep in mind that the graph you need to take into consideration is concentration over time.

Subhani Diu 1F
Posts: 16
Joined: Fri Sep 28, 2018 12:20 am

Re: Meaning of Zero, First, and Second Order?

Postby Subhani Diu 1F » Sun Mar 10, 2019 10:41 pm

The orders correspond to the sum of the reactants' individual orders. It's helpful looking at the particular graphs to determine the overall reaction order.


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