reaction order

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

reaction order

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

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

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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