Pure Solids and Pure Liquids

Moderators: Chem_Mod, Chem_Admin

505095793
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am

Pure Solids and Pure Liquids

Postby 505095793 » Wed Jan 16, 2019 3:58 pm

Is equilibrium affected by addition/removal of a pure solid or pure liquid?

Kyle Golden Dis 2G
Posts: 67
Joined: Fri Sep 28, 2018 12:17 am

Re: Pure Solids and Pure Liquids

Postby Kyle Golden Dis 2G » Wed Jan 16, 2019 3:59 pm

The equilibrium constant is not affect by pure liquids or solids. Only gases and aqueous solutions affect equilibrium.

Julia Go 2L
Posts: 60
Joined: Sun Sep 30, 2018 12:17 am
Been upvoted: 1 time

Re: Pure Solids and Pure Liquids

Postby Julia Go 2L » Wed Jan 16, 2019 4:20 pm

Unlike gases and aqueous solutions, pure liquids and solids do not change in molar concentration in a reaction. So, we do not need to include them in equilibrium constant expressions. Also, solvents (ex: water) are omitted from equilibrium constant expressions because the change in solvent concentration is insignificant.

Kimberly 1H
Posts: 63
Joined: Fri Sep 28, 2018 12:17 am
Been upvoted: 1 time

Re: Pure Solids and Pure Liquids

Postby Kimberly 1H » Wed Jan 16, 2019 5:30 pm

Consider the activities of pure solids and liquids as 1. Even when you include them in the calculation for equilibrium constant, they doesn't affect the result.

michelle
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Pure Solids and Pure Liquids

Postby michelle » Fri Jan 18, 2019 5:03 pm

No. Water is only considered in the calculation when it is in gas phase.


Return to “Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions”

Who is online

Users browsing this forum: No registered users and 2 guests