reaction order

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Maria Wothe 3J
Posts: 8
Joined: Wed Sep 21, 2016 2:55 pm

reaction order

Postby Maria Wothe 3J » Sun Feb 12, 2017 10:48 pm

How do you know if a reaction is 0, 1st, or 2nd order?

Gisselle Cervantes 2G
Posts: 17
Joined: Wed Sep 21, 2016 2:58 pm

Re: reaction order

Postby Gisselle Cervantes 2G » Sun Feb 12, 2017 11:06 pm

There are many ways to determine whether a reaction is zero, first, or second order such as by looking at graphs or tables. Generally, the rate of the reaction of a zero order reaction is independent of the concentration of the reactants, Rate=k[A]^0=k. For a first order, the rate of the reaction is directly proportional to the concentration of one of the reactants, Rate=k[A]^1. The rate of the reaction of a second order reaction is directly proportional to the square of the concentration of one of the reactants, Rate=k[A]^2.

Chris_Rudewicz_3H
Posts: 32
Joined: Fri Jul 22, 2016 3:00 am
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Re: reaction order

Postby Chris_Rudewicz_3H » Sun Feb 12, 2017 11:07 pm

You can do various plots and if it is a straight line, you can determine what order the rxn is. For example, for zero-order reactions, if you plot [A] vs. time, it should be a straight negative line.

Chris_Rudewicz_3H
Posts: 32
Joined: Fri Jul 22, 2016 3:00 am
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Re: reaction order

Postby Chris_Rudewicz_3H » Sun Feb 12, 2017 11:07 pm

This video may also be helpful to you https://www.khanacademy.org/science/che ... tion-order


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