Ways of determining what order reactions are


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Sarah Sharma 2J
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

Ways of determining what order reactions are

Postby Sarah Sharma 2J » Mon Feb 26, 2018 9:09 pm

Hello, I was wondering what are some ways of classifying what orders certain reactions are in? What are some key details that we can look for?

Sarkis Sislyan 1D
Posts: 31
Joined: Thu Jul 27, 2017 3:00 am

Re: Ways of determining what order reactions are

Postby Sarkis Sislyan 1D » Mon Feb 26, 2018 9:12 pm

The order of a reaction is found by adding up the orders of all the reactants. To find the order of a reactant, we can use experimental data given to us. If an increase in concentration of a reactant doesn't change the reaction rate, then that reactant is a 0 ordered reactant. If the ratio of concentration change equals the ratio of reaction rate change when changing a single reactant, then that reactant is a 1st ordered reactant. If the ratio of concentration change equals the ratio of the reaction rate change squared, then that reactant is a 2nd ordered reactant.

Yixin Angela Wang 2H
Posts: 51
Joined: Thu Jul 27, 2017 3:00 am

Re: Ways of determining what order reactions are

Postby Yixin Angela Wang 2H » Wed Feb 28, 2018 12:45 am

Also looking at a graph of the data will give you an idea of what order a reaction is. For example, if the data looks linear, its first order.


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