Molecularity and Coefficients


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

Molecularity and Coefficients

Postby Jeremiah Samaniego 2C » Sat Mar 10, 2018 2:41 pm

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

Postby Britney Alvey 1B » Sat Mar 10, 2018 3:23 pm

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

Postby Shane Simon 2K » Sat Mar 10, 2018 7:54 pm

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

Postby KayleeMcCord1F » Sun Mar 11, 2018 3:33 pm

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


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