Solids and Liquids in Rxn

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Madison Hurst
Posts: 62
Joined: Fri Sep 28, 2018 12:26 am

Solids and Liquids in Rxn

Postby Madison Hurst » Fri Jan 11, 2019 4:07 pm

What would K be if the reaction was only made up of solids and liquids, no gases or aq solutions?

sophiebillings1E
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: Solids and Liquids in Rxn

Postby sophiebillings1E » Fri Jan 11, 2019 4:08 pm

I believe since solids and liquids are considered 1 in the equation K=1

Erin Kim 2G
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Re: Solids and Liquids in Rxn

Postby Erin Kim 2G » Fri Jan 11, 2019 7:04 pm

Solids and liquids are not included in the equilibrium constant equation. They are put in as a value of 1 and only gases and aqueous elements are considered when solving for the equilibrium constant.

Rami_Z_AbuQubo_2K
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Re: Solids and Liquids in Rxn

Postby Rami_Z_AbuQubo_2K » Sat Jan 12, 2019 10:45 am

If it was solids and liquids, then there would not be an equilibrium constant. There is no such thing as a concentration of a solid. Additionally, for pure liquids, they do not react significantly in the reaction. This means that the amount of pure liquid in the reactants is almost the same as that in the products and so they eventually cancel out in the ration of products to reacts. Essentially, it is just unnecessary to use them in the calculation.

MichaelMoreno2G
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Re: Solids and Liquids in Rxn

Postby MichaelMoreno2G » Sat Jan 12, 2019 12:19 pm

In response to the responses above me, why would solids and liquids not apply to the equilibrium constant?

Chem_Mod
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Re: Solids and Liquids in Rxn

Postby Chem_Mod » Sat Jan 12, 2019 12:27 pm

There are very very few reactions (if any at all) in which a pure solid and liquid react to yield another pure solid or liquid. If a pure solid and liquid did react, the resulting product would be dissolved to some extent in the pure liquid and thus have a concentration which would appear in the equilibrium equation.

Anand Narayan 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Solids and Liquids in Rxn

Postby Anand Narayan 1G » Sat Jan 12, 2019 4:53 pm

If the reaction was only made up of solids and liquids, then K would be equal to 1.


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