Types of Molecularity

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Melissa Villanueva1K
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Joined: Wed Nov 15, 2017 3:01 am

Types of Molecularity

Postby Melissa Villanueva1K » Fri Mar 15, 2019 3:32 pm

What are the different types of molecularity and what do they mean?

Catly Do 2E
Posts: 64
Joined: Fri Sep 28, 2018 12:24 am

Re: Types of Molecularity

Postby Catly Do 2E » Fri Mar 15, 2019 3:36 pm

- Unimolecular reaction: only 1 reactant molecule participates, molecularity =1
- Bimolecular reaction: two reactant species come together to react, molecularity=2
- Termolecular reaction: the collision of 3 molecules & uncommon

megan blatt 2B
Posts: 61
Joined: Fri Sep 28, 2018 12:28 am

Re: Types of Molecularity

Postby megan blatt 2B » Sun Mar 17, 2019 12:15 am

A reaction can be unimolecular with only one reactant molecule, bimolecular where two reactant molecules collide, and termolecular where three molecules must collide at the right orientation and with enough energy to cause a reaction. It is much more difficult for three molecules to collide perfectly to cause a reaction so the reaction rate is much slower than a bi or unimolecular reaction.

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Joined: Fri Sep 28, 2018 12:29 am

Re: Types of Molecularity

Postby EllaBerry » Sun Mar 17, 2019 10:13 am

The three types are unimolecular, bimolecular, and termolecular. It depends on how many reactants there are in the rate law.

Gillian Ward 1F
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Joined: Fri Sep 28, 2018 12:27 am

Re: Types of Molecularity

Postby Gillian Ward 1F » Sun Mar 17, 2019 4:14 pm

Unimolecular--1 reactant molecule
Bimolecular--2 reactant molecules
Termolecular--3 reactant molecules

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