## Molecularity and Coefficients

$K = \frac{k_{forward}}{k_{reverse}}$

Jeremiah Samaniego 2C
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

### Molecularity and Coefficients

Does the stoichiometric coefficient in a reaction affect the molecularity? For example, if there was a reaction such as 2 A --> B + C, would the reaction be unimolecular or bimolecular?

Britney Alvey 1B
Posts: 31
Joined: Fri Jun 23, 2017 11:39 am

### Re: Molecularity and Coefficients

The reaction 2 A --> B + C would be bimolecular.

Shane Simon 2K
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

### Re: Molecularity and Coefficients

Molecularity is basically just the number of molecules that come together in a reaction. A way to find this is by just adding all of the stoichiometric coefficients of the reactants in an elementary reaction. So 2A would be bimolecular, 3A would be trimolecular, and A would be unimolecular. And with multiple reactants, A + B would be bimolecular since there are two molecules colliding and 2A + B would be trimolecular since there are 2 A molecules and 1 B molecule.

KayleeMcCord1F
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

### Re: Molecularity and Coefficients

Molecularity just has to do with the number of molecules coming together, rather than the type/identity of the molecules.