## First Order vs Second Order Reaction Half- Life

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

VivianaHF2L
Posts: 29
Joined: Fri Sep 28, 2018 12:20 am

### First Order vs Second Order Reaction Half- Life

When finding seconds for problem 27 in edition 6 it was just finding 1/2^n. Does this change when it is no longer first order? For example in problem 35 edition 6 the same method no longer works? Is it because it is second order?

Samantha Jimenez 4k
Posts: 29
Joined: Fri Sep 28, 2018 12:21 am

### Re: First Order vs Second Order Reaction Half- Life

you have to take the half-life to the 4th power