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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: supehr on May 23, 2015, 09:26:05 PM

Title: Rates of reaction homework Quest.
Post by: supehr on May 23, 2015, 09:26:05 PM

Hello!

I just have a quick question concerning rates of reactions. I encountered the following problems in my TB:

In the reaction 2A  :rarrow: 3B, [A] drops from 0.5684M to 0.5522M in 2.50 min. What is the average rate of formation of B during this time interval expressed in Ms^-1

I've attached the solution to the problem. I've also attached the formula to getting the rate of reaction

What I'm confused about is why isn't the negative coefficient for A (being -1/2) included as well? Why is it just 3/-2?

Title: Re: Rates of reaction homework Quest.
Post by: mjc123 on May 27, 2015, 07:09:42 AM

What is the difference between "rate of B formation" and "rate of reaction"?