Rate law equations

Moderators: Chem_Mod, Chem_Admin

Posts: 32
Joined: Fri Sep 29, 2017 7:06 am

Rate law equations

Postby Anika_Patel_1G » Sun Feb 25, 2018 5:54 pm

What is the difference between the equations Rate=k x [concentration]^a and (-1/a)*(d[A]/dt)?

Lourick Bustamante 1B
Posts: 50
Joined: Wed Nov 16, 2016 3:02 am

Re: Rate law equations

Postby Lourick Bustamante 1B » Sun Feb 25, 2018 6:56 pm

The two equations are equal to each other; therefore, you can use either one. The equation k[R]^n is just the other reaction rate equation reexpressed after doing experiments to observe d[R]/dt. The equation k[R]^n is in terms of the rate constant, k, the concentration of reactant, [R], and the order of reactant, n.

Wenxin Fan 1J
Posts: 53
Joined: Thu Jul 13, 2017 3:00 am

Re: Rate law equations

Postby Wenxin Fan 1J » Sun Feb 25, 2018 8:33 pm

They are the same. They are only written using different variables but they ultimately represent the same thing.

Emma Li 2C
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am
Been upvoted: 1 time

Re: Rate law equations

Postby Emma Li 2C » Sun Feb 25, 2018 9:18 pm

I think the second one is described as the unique instantaneous rate of a reaction, and the first one as the rate law but they should calculate the same thing!

Return to “General Rate Laws”

Who is online

Users browsing this forum: No registered users and 1 guest