## rate constant k

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

Olivia L 4E
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### rate constant k

Why is the rate constant k not negative for second order reactions?

Kyle Golden Dis 2G
Posts: 67
Joined: Fri Sep 28, 2018 12:17 am

### Re: rate constant k

Rate constants are never negative in any reactions. The value of k will always be positive.

Simran Rai 4E
Posts: 58
Joined: Fri Sep 28, 2018 12:17 am

### Re: rate constant k

You can think about it as a rate not proceeding negatively. It can be slow, or you can have a reverse rate, but a “negative” rate is not possible.