## Rate Law sign

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

Ryan Fang 1D
Posts: 53
Joined: Sat Jul 22, 2017 3:00 am

### Rate Law sign

Can a rate be negative and why?

Aijun Zhang 1D
Posts: 53
Joined: Tue Oct 10, 2017 7:13 am

### Re: Rate Law sign

Rate cannot be negative. It is defined as positive. Similarly, we usually consider speed as positive.

Nishma Chakraborty 1J
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

### Re: Rate Law sign

I'm pretty sure that the rate of a chemical reaction can only be positive.

RussellChin_3A
Posts: 42
Joined: Sat Jul 22, 2017 3:01 am

### Re: Rate Law sign

No a rate cannot be negative. A reaction cannot progress at -2 M/s.