## Integrated Rate Law

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

Mya Majewski 1L
Posts: 89
Joined: Fri Sep 25, 2015 3:00 am

### Integrated Rate Law

How do you know whether to use the exponential decay 1st rate law or the regular integrated rate law? For example, in the 6th edition 15.25.

Matthew Tran 1H
Posts: 165
Joined: Fri Sep 28, 2018 12:16 am

### Re: Integrated Rate Law

It doesn't matter since they are just different versions of each other and you will get the same answer either way. It really just depends on what you're solving for (one version may be easier to use) or personal preference.

Yvonne Du
Posts: 64
Joined: Fri Sep 28, 2018 12:23 am

### Re: Integrated Rate Law

What is the exponential first-rate law?

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