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The Units of k (rate constant) for second order

Posted: Mon Feb 20, 2017 3:19 pm
by Hector_Galarza_2E
As I was trying to figure out the units for the rate constant (k) for second order, using the integrated rate law, I got that the units were 1/M^-1*sec^-1, are these units correct? If so, could an explanation be provided as to how they can be understood conceptually.

Re: The Units of k (rate constant) for second order

Posted: Mon Feb 20, 2017 3:25 pm
by JaeHoCho1B
It is going to be that since the initial rate is measured in M/S while the [A]^2 is in M^2. So as a result, k has to be 1/(M)(s).

Re: The Units of k (rate constant) for second order

Posted: Mon Feb 20, 2017 3:30 pm
by Amy_Bugwadia_3I
The units for second order reactions is M^(-1)* s^(-1), or L/(mol*s), so you are correct!