initial rate law


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Emma Li 2C
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Joined: Fri Sep 29, 2017 7:07 am
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initial rate law

Postby Emma Li 2C » Sun Feb 25, 2018 1:37 pm

Is it always only the reactant concentrations that affect the rate law?

Thank you!

Jeremiah Samaniego 2C
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

Re: initial rate law

Postby Jeremiah Samaniego 2C » Sun Feb 25, 2018 1:46 pm

For ease of analysis, we want to study specifically the initial concentrations of reactants, because as the reaction progresses, the presence of products could affect the interpretation of the reaction rate.

Diego Zavala 2I
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Re: initial rate law

Postby Diego Zavala 2I » Sun Feb 25, 2018 2:19 pm

Because the rate law would become more complicated if we were to analyze the rxn when the presence of products is significant, we only consider the reaction at the very beginning when the amount of products can be considered negligible. While products also affect the rate law, we consider the rate law at a domain where it remains insignificantly affected by the concentration of products

Ramya Lakkaraju 1B
Posts: 67
Joined: Fri Sep 29, 2017 7:03 am

Re: initial rate law

Postby Ramya Lakkaraju 1B » Mon Feb 26, 2018 3:37 pm

The more accurate method would be to analyze changes in both the reactant and product concentrations.

Sally Nason - 1K
Posts: 40
Joined: Fri Sep 29, 2017 7:05 am

Re: initial rate law

Postby Sally Nason - 1K » Tue Feb 27, 2018 12:51 pm

Also in a lot of the homework problems, you use the change in the concentration of the product to find the change in the concentration of the reactant.

Guadalupe T 1E
Posts: 58
Joined: Fri Sep 29, 2017 7:04 am

Re: initial rate law

Postby Guadalupe T 1E » Tue Feb 27, 2018 4:10 pm

Yes because you won't always know how much product is made.


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