## K

Diana_Diep2I
Posts: 130
Joined: Sat Aug 17, 2019 12:17 am

### K

Why does k have to be in [M]/s?

jisulee1C
Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

### Re: K

k (the rate constant) units depend on the order of a reaction (which can be found online). For a first order reaction the units are 1/s, for a second order reaction the units are 1/ms. as for the K (equilibrium constant) there are no units.

MingdaH 3B
Posts: 133
Joined: Thu Jul 11, 2019 12:17 am

### Re: K

it doesn't have to be M/s, as it depends on the order of the reaction. It is a simple constant that relates the rate of reaction to the concentration of reactants, and so the units come from changing one to the other.

Anisha Chandra 1K
Posts: 118
Joined: Thu Jul 11, 2019 12:17 am

### Re: K

k doesn't have to have units M/s, but the overall rate does.