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### Graph of first and zero order reactions

Posted: **Tue Feb 28, 2017 12:04 am**

by **Angela_Park_1F**

Hi, Looking at the tangent graphs of the first order and zero order reactions, we see that both slopes are -k. So it looks like a straight line going down. Would we be able to tell if it is a first or zero order reaction just by looking at the graphs? If not, what other information do we need?

### Re: Graph of first and zero order reactions

Posted: **Tue Feb 28, 2017 12:10 am**

by **Armo_Derbarsegian_3K**

The rate law should be the indication.

### Re: Graph of first and zero order reactions

Posted: **Tue Feb 28, 2017 10:18 am**

by **shreya_mantri_3I**

You could tell if the graph is a first order reaction or a zero order reaction by looking at what the x and y axes represent.

For example

First order- y axis is ln [a] and x axis is time

Zero order-y axis is A and x axis is time