Finding Order of Reactions

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Cynthia Ulloa
Posts: 52
Joined: Fri Feb 23, 2018 3:02 am

Finding Order of Reactions

Postby Cynthia Ulloa » Sat Mar 16, 2019 11:42 pm

When setting up our rate rations to find the order of reaction, does it matter which rates we take from the experimental data? and how do we decide which to put as our numerator?

Brevin Hensley 1C
Posts: 24
Joined: Fri Sep 28, 2018 12:25 am

Re: Finding Order of Reactions

Postby Brevin Hensley 1C » Sat Mar 16, 2019 11:46 pm

You can choose any rates from the experimental data, as long as all rates you choose are from the same specific trial and not from multiple trials. As long as this is consistent then the value for the rate of consumption will be the same no matter which concentrations you select.

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Finding Order of Reactions

Postby Angela Patel 2J » Tue Mar 03, 2020 7:36 pm

Also remember that rate constants are temperature specific.

Edmund Zhi 2B
Posts: 118
Joined: Sat Jul 20, 2019 12:16 am

Re: Finding Order of Reactions

Postby Edmund Zhi 2B » Tue Mar 03, 2020 11:53 pm

The order of reactions are determined by comparing different experiments. By keeping all but one reactant constant, you can determine the order of the varying reactant by seeing it's effect on the initial rate.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: Finding Order of Reactions

Postby kristi le 2F » Sun Mar 08, 2020 6:35 pm

You should get the same rate constant for different experiments if your rate law is correct. You can also do it for multiple experiments if you want to check your answers.

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