## Examples

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

K Stefanescu 2I
Posts: 68
Joined: Fri Sep 29, 2017 7:04 am

### Examples

What is an example of a first order rate reaction? Are there any types of reactions that we should generally know are likely to be first order ones?

Michelle Nguyen 2L
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

### Re: Examples

The problem should always tell you the order of the reaction unless they want you to verify if it is first order or whatnot, in which case you would likely have to plot ln[A] by time and determine if the graph is a straight line. The decomposition of N2O5 to yield NO2 and O2 gas is a first order reaction, but I doubt you will have to memorize that.

Anna Okabe
Posts: 30
Joined: Fri Sep 29, 2017 7:06 am

### Re: Examples

Also as discussed in class, radioactive decay is a first-order reaction.

Sarkis Sislyan 1D
Posts: 31
Joined: Thu Jul 27, 2017 3:00 am

### Re: Examples

Unless experimental data is given to you with which you can find the reaction order, the reaction order will be given to you.