## Average rate

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

Hailey Boehm 2H
Posts: 71
Joined: Fri Sep 28, 2018 12:24 am

### Average rate

When is an example of a circumstance where we would need to use the average rate? or what is an instance in which we would need to apply the average rate to a situation?

Alyssa Wilson 2A
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

### Re: Average rate

I believe we just need to know the definition, which is that the average rate is the change in [R] or [P] per unit of time. (Average rate= change in concentration/change in time). We only need to solve for the average rate when we are looking for the gradient (slope). The average rate of reactants will always be negative, where the average rate of the products will always be some positive number.

Toru Fiberesima 1L
Posts: 63
Joined: Fri Apr 06, 2018 11:02 am

### Re: Average rate

The average rate is obtained by taking the slope of the line connecting any two points on the curve during that period. Ie amount of change/time taken.

The instantaneous rate is obtained by taking the slope of the line tangent to the curve at a given time (t). The instantaneous rate is essentially the average rate as t approaches zero.