rate laws


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LG2019
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

rate laws

Postby LG2019 » Thu Mar 14, 2019 2:10 pm

Do rate laws depend on the stoichiometric coefficients of the reactants in the balanced chemical equation?

LilyL1C
Posts: 24
Joined: Fri Sep 28, 2018 12:20 am

Re: rate laws

Postby LilyL1C » Thu Mar 14, 2019 5:31 pm

No they do not. You can find the exponents of rate laws by comparing the rates of two reactions, or they will be given in an experimental rate law.

LG2019
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: rate laws

Postby LG2019 » Thu Mar 14, 2019 5:45 pm

Ok cool thanks!

juliasloan_4g
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Re: rate laws

Postby juliasloan_4g » Thu Mar 14, 2019 6:25 pm

no the only way to find the rate law is with experimental data, not the equation on its own

Bruce Chen 2H
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: rate laws

Postby Bruce Chen 2H » Fri Mar 15, 2019 2:30 pm

it is a common misconception that they are. However, the stoichiometric coefficients are not used in the rate law. It should always be given or we will have experiments to use them.

riddhiduggal
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

Re: rate laws

Postby riddhiduggal » Fri Mar 15, 2019 10:54 pm

the stoichiometric coefficients actually aren't used in the rate law.

Maria Solis Disc 1G
Posts: 63
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 2 times

Re: rate laws

Postby Maria Solis Disc 1G » Fri Mar 15, 2019 11:03 pm

I was told by my PLF that they are used only for elementary step rate laws


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