Units

[Emma Randolph 1J]

What are the units for k in the different orders of reaction?

[Sarah Kiamanesh 1D]

Zero order reactions: concentration over time (M/s)
First order reactions: s^-1
Second order reactions: 1/(M*s)

[Joanna Pham - 2D]

the units vary depending on the order. rate has the units of mol/(L*s), and concentration has units of mol/L. Thus, to find the units of k, you need to first determine the order of the reaction. For example, if you had A + A -> Product, the rate = k[A]^2. To get the right side of the equal side equal to the units of rate (mol/(L*s)), because [A]^2 has units of (mol^2)/(L^2), k must have units of L/(mol*s).

[Aria Soeprono 2F]

Why do the units change depending on the order of the reaction?