Rate laws vs average rate


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905022356
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Joined: Mon Oct 02, 2017 7:19 am

Rate laws vs average rate

Postby 905022356 » Sun Mar 04, 2018 10:49 am

Hi can someone explain to me the difference between the average rate of a reaction and the rate laws? when should I use each equation?

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Re: Rate laws vs average rate

Postby Chem_Mod » Sun Mar 04, 2018 11:34 am

Remember that rate is change in concentration over time (M/s). The average rate of a reaction is the change in concentration of reactants over a certain time interval. So it would be rate=-Δ[R]/Δt. The rate law, on the other hand, is setting rate (M/s) equal to rate constant k times concentration of reactants. So it would be rate=k[R]x.

905022356
Posts: 48
Joined: Mon Oct 02, 2017 7:19 am

Re: Rate laws vs average rate

Postby 905022356 » Mon Mar 05, 2018 10:46 am

Thank you! That helped a lot :)


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