## Average rate vs unique rate

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

Malia Shitabata 1F
Posts: 127
Joined: Sat Aug 17, 2019 12:17 am

### Average rate vs unique rate

How do you know when to use the average rate vs the unique rate?

Diana A 2L
Posts: 106
Joined: Sat Aug 17, 2019 12:16 am
Been upvoted: 1 time

### Re: Average rate vs unique rate

Malia Shitabata 1F wrote:How do you know when to use the average rate vs the unique rate?

Unique rates are used when you’re referring to a specific reactant or product, and it’s the rate of disappearance or appearance of a substance divided by the stoichiometric coefficient, which is why it’s so specific. When you calculate average rate, coefficients aren’t taken into account. I hope that helps.

cassidysong 1K
Posts: 100
Joined: Fri Aug 30, 2019 12:15 am

### Re: Average rate vs unique rate

^^ Unique reaction rates means that it is the same for all reactants and products as opposed to the average reaction rate which can be different for each reactant and product.

Miriam Villarreal 1J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

### Re: Average rate vs unique rate

Average rate involves seeing how much reactant or product you make over time (average rate of consumption/formation). Unique rate involves dividing the concentration over time by the stoichiometric coefficient . Average looks at one particular time range

Kaylee Clarke 1G
Posts: 103
Joined: Fri Aug 30, 2019 12:15 am

### Re: Average rate vs unique rate

referring to the aforementioned appearance/disappearance of substances, are you referring to intermediate substances? if not, what are the substances?