Finding k  [ENDORSED]

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Abdullah2I
Posts: 41
Joined: Fri Sep 29, 2017 7:06 am

Finding k

Postby Abdullah2I » Fri Mar 09, 2018 9:38 pm

How can you determine what K is based on a table without being given any other information outside of concentration and initial rates?

Krupa Prajapati
Posts: 50
Joined: Sat Jul 22, 2017 3:00 am

Re: Finding k

Postby Krupa Prajapati » Fri Mar 09, 2018 9:42 pm

Hi! We can find k by first finding the rate law, through comparing the change in concentrations versus the change in initial rates. After doing this, we will then find the order of each of the reactants and can write the rate law. since the rate law is

initial rate = k[reactant 1][reactant2] and so on

we can just use one of the lines in the table and plug in the concentrations of the reactants as well as the initial rates, and solve for k.

Jasmin Tran 1J
Posts: 54
Joined: Thu Jul 27, 2017 3:00 am

Re: Finding k  [ENDORSED]

Postby Jasmin Tran 1J » Fri Mar 09, 2018 11:38 pm

For more explanation, you should go to https://chem.libretexts.org/Core/Physic ... tion_Order and scroll down to Example 4, where the site goes through the strategies and solutions to finding reaction order and rate constant (k).

Hope this helps!


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