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Units

Posted: Fri Mar 09, 2018 1:03 pm
by Ryan Neis 2L
What are the units for zero, first, and second-order reactions?

Re: Units

Posted: Fri Mar 09, 2018 1:24 pm
by Andy Nguyen 1A
The unit for k in a 0 order reaction is mol/(L*s). In a first order reaction, k is in 1/s. In a second order reaction, k is L/(mol*s).

Re: Units

Posted: Fri Mar 09, 2018 1:53 pm
by Katie Lam 1B
The units for the rate constant changes depending on the order of reaction, but the rate itself is always in mol/(L*s).

Re: Units

Posted: Fri Mar 09, 2018 2:20 pm
by Justin Folk 3I
What about units for a 1.5 order?

Re: Units

Posted: Fri Mar 09, 2018 2:37 pm
by Seth_Evasco1L
Units of k for a reaction order of 1.5 would most likely have units of L0.5*mol-0.5*s-1.

Re: Units  [ENDORSED]

Posted: Fri Mar 09, 2018 3:08 pm
by Liz White 1K
As a general formula to calculate the units of the rate constant for any reaction order n, you can use the equation:

units of k = (L/mol)n-1 / s