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Postby CristinaMorales1F » Sun Mar 17, 2019 12:30 am

How do you determine what order something is in by the trials and concentrations?

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Re: trials

Postby NatBrown1I » Sun Mar 17, 2019 12:40 am

If you have a table of values (like in the video) you can see how the concentrations of each of the elements in the table and the changes in them affect the initial rate of reaction.

By choosing two sets of data, you can isolate one of the elements of the reaction to compare and see the effect of one specific element to the initial rate.

You would repeat this for all of the elements in your reaction.

This video shows it a lot better: ... tion-order

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Re: trials

Postby Chem_Mod » Sun Mar 17, 2019 12:41 am

You set up the rate law expressions for the different experiments and then you divide one rate law expression by another rate law expression in order to cancel out terms and get only one exponent that you can solve for, using logarithms if necessary. These exponents are the orders. :)

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