## integrated rate law to determine order

$aR \to bP, Rate = -\frac{1}{a} \frac{d[R]}{dt} = \frac{1}{b}\frac{d[P]}{dt}$

Maeve Gallagher 1J
Posts: 56
Joined: Fri Sep 29, 2017 7:07 am

### integrated rate law to determine order

In Dr. Lavelle's chemical kinetics outline, it says that we should "be able to use the appropriate integrated rate law to determine the order of a reaction." I understand how to do the opposite and find the rate law based on the order, but how do we find the order from the integrated rate law?

Harjas Sabharwal 1G
Posts: 42
Joined: Sat Jul 22, 2017 3:01 am

### Re: integrated rate law to determine order

By manipulating the equation to the y = mx + b format, you can compare your equation to the integrated rate laws for each order, and then determine the order of your expression.

Harrison Wang 1H
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

### Re: integrated rate law to determine order

For second order integrated rate law = k is positive, reciprocal of concentration is taken
For first order integrated rate law = ln/e will be involved, k is negative
For 0 order integrated rate law = k is negative, concentration is left as is