Reaction Order

[Bianca Barcelo 4I]

How does the reaction order affect the units of rate laws?

[MaanasO 1A]

The final output should have the units M/s. So if you have higher than a 1st order reaction, you'll have extra M multiplied together => the k will have multiple 1/M to cancel everything out.

[Clarissa Cabil 1I]

Given reaction A --> B (concentrations are in mol.L^-1 and time is in s)

If this reaction is a zero order reaction, the units for its rate constants should be (mol A).L^-1.s^-1

If this reaction is a first order reaction, the units for its rate constants should be s^-1

If this reaction is a second order reaction, the units for its rate constants should be L.(mol A)^-1.s^-1

Hope this helps!

[Lia Inadomi 1I]

A general formula can be M^(1-p)*s^-1, where p is the overall order of the reaction.

[Casandra]

For a zero order rate the units are mol/L*s
For a 1st order rate the units are 1/s
For a 2nd order rate the units are L/mol*s