## reaction order

$\frac{d[R]}{dt}=-k[R]; \ln [R]=-kt + \ln [R]_{0}; t_{\frac{1}{2}}=\frac{0.693}{k}$

Simrina Desar Dis 1H
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

### reaction order

Do reaction orders always have to be whole numbers or can they also have fractional orders?

Humza_Khan_2J
Posts: 56
Joined: Thu Jul 13, 2017 3:00 am

### Re: reaction order

From some outside reading I've done(link posted below), certain complex reaction mechanisms with rate determining steps can result in fractional orders. They are indeed possible.

https://chemistry.stackexchange.com/que ... -mechanism

Kaileigh Yang 2I
Posts: 49
Joined: Sat Jul 22, 2017 3:00 am

### Re: reaction order

Reaction orders are typically positive numbers but it is possible for them to be zero, fractional, or negative.