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Solids in Equilibrium Reactions

Posted: Thu Nov 10, 2016 5:07 pm
by Helen_Lee_1L
In the course reader, it says that "molar concentration of a pure substance (solid or liquid) does not change in a reaction." However, during lecture, Professor Lavelle mentioned that solids do not show up in equilibrium reactions. Can anyone explain to me why this rule exists? Thank you!

Re: Solids in Equilibrium Reactions

Posted: Thu Nov 10, 2016 5:31 pm
by Beata_Vayngortin_3L
solids and liquids are not included in equilibrium reactions because of the fact that their concentrations do not change. Because their concentrations do not change, we do not include them in equilibrium reactions to make the problems easier to solve. the statement in the course reader that you listed is the rationale for not including solids and liquids in equilibrium reactions.