Solvents in Equilibrium Constants

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Samantha Low 3D
Posts: 106
Joined: Wed Sep 30, 2020 10:04 pm

Solvents in Equilibrium Constants

Postby Samantha Low 3D » Sat Jan 16, 2021 11:59 pm

May someone please clarify on why we don't put solvents in our equilibrium constant calculations? And how do we know if a reactant is a solvent or not?

Bailey Giovanoli 1L
Posts: 109
Joined: Wed Sep 30, 2020 9:50 pm

Re: Solvents in Equilibrium Constants

Postby Bailey Giovanoli 1L » Sun Jan 17, 2021 12:25 am

What I took from the lectures is that the solvent will be on both the reactant and product side. Therefore, when you put it in the equilibrium constant, it will cancel because it would be present on both top and bottom. I also believe it will clarify that a reactant is a solvent if it is not H2O.

Hannah Biju 1E
Posts: 91
Joined: Wed Sep 30, 2020 9:55 pm

Re: Solvents in Equilibrium Constants

Postby Hannah Biju 1E » Sun Jan 17, 2021 12:31 am

Additionally, because there is so much solvent, although it will also be protonated, it will only be to a miniscule, insignificant amount compared to the large amount of solvent.

Saja Kamal 2L
Posts: 18
Joined: Thu Jul 25, 2019 12:16 am

Re: Solvents in Equilibrium Constants

Postby Saja Kamal 2L » Sun Jan 17, 2021 12:36 am

Hi Samantha!

To answer your first question, we do not have to put solvents in equilibrium constant calculations because they would end up canceling out on both sides of the reaction anyway. This is because their effect or change is insignificant.


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