solids and liquids  [ENDORSED]

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aaronharouni
Posts: 72
Joined: Fri Sep 28, 2018 12:15 am

solids and liquids

Postby aaronharouni » Sun Jan 13, 2019 4:19 pm

Why are solids and liquids not included in equilibrium?

Edward Xie 2E
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: solids and liquids

Postby Edward Xie 2E » Sun Jan 13, 2019 4:52 pm

Molar concentration of a pure substance (solid or liquid) does not change in a reaction, so solids and liquids are not included in the K expression

Ryan Troutman 4L
Posts: 68
Joined: Fri Sep 28, 2018 12:22 am

Re: solids and liquids  [ENDORSED]

Postby Ryan Troutman 4L » Sun Jan 13, 2019 5:32 pm

Solids and liquids are pure substances, so their concentrations do not change during the duration of the reaction,. Therefore solids and liquids are negligible when calculating Kc, Kp, and Q since they won't have any influence on the final answer to the equilibrium problems.

davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: solids and liquids

Postby davidryan3f » Sun Jan 13, 2019 5:42 pm

Molarity of a solid and liquid cannot change during the course of a reaction so there is no need to include them when finding K.

Luc Lorain 1L
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: solids and liquids

Postby Luc Lorain 1L » Sun Jan 13, 2019 6:12 pm

The nature of pure solids and liquids further can be extended to pure, inert gases (group VIII). Inert gas can be added to an equilibrium mixture at a constant volume to increase the pressure of the mixture; however there will be no change in equilibrium as the amount of neither reactant nor product is affected.


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