Differential vs Integrated  [ENDORSED]

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104922499 1F
Posts: 53
Joined: Fri Sep 29, 2017 7:04 am

Differential vs Integrated

Postby 104922499 1F » Sat Mar 03, 2018 11:46 am

How do you determine when to use the differential rate law vs the integrated rate law? Does the question and what is given help?

Felicia Fong 2G
Posts: 31
Joined: Sat Jul 22, 2017 3:00 am

Re: Differential vs Integrated

Postby Felicia Fong 2G » Sat Mar 03, 2018 12:05 pm

Integrated rate law questions normally give the rate constant and [A]o(initial concentration) and ask you how much remains ([A]t) after a certain amount of time. Or you may be asked to find how long will it take (find t) for concentration to decrease from x mol/L to y mol/L.

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

Re: Differential vs Integrated  [ENDORSED]

Postby Jasmin Tran 1J » Sat Mar 03, 2018 2:10 pm

Differential rate laws express the rate of reaction as a function of a change in the concentration of one or more reactants over a particular period of time while integrated rate laws express the reaction rate as a function of the initial concentration and an actual concentration of one or more reactants after a specific amount of time as passed.
Rate = -d[A] = k[A]n dt (differential) vs ln[A] = -kt + ln[A]0 (integrated)

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