units

[megangeorge-1K]

what is the units of k for a second order reaction

[Danielle Hoekstra 1C]

1/Msec

[Priscilla Okaiteye]

that would be m^-1t^-1

[kristi le 2F]

fYou can always solve the units for k by dividing the units for rate (mol x L^-1 x s^-1) by the units of your concentrations (which depend on the order of the reaction).

[Sofia Barker 2C]

The units of k are L/(mol x seconds) for a second-order reaction.
You can solve for the units through the equation rate = k[concentration]^2.
k = rate / [concentration]^2
k = mol/(L x seconds) / (mol/L)^2
k = (mol / Ls) x (L^2 / mol^2)
k = L / mol S, which can be written as 1/(M x s), M being molarity

[Christine Honda 2I]

You can always solve for the units by knowing the rate reaction equation (rate=k[A]^2) and solving for k!