calculation of equilibrium constant

Moderators: Chem_Mod, Chem_Admin

505166714
Posts: 50
Joined: Fri Sep 28, 2018 12:17 am

calculation of equilibrium constant

Postby 505166714 » Thu Jan 10, 2019 8:45 pm

1. If the reaction includes both aqueous solutions and gases, how can we calculate the equilibrium constant?
2. Under what condition can the concentration(partial pressure) of water be included in the calculation of equilibrium constant?

Chem_Mod
Posts: 17110
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 367 times

Re: calculation of equilibrium constant

Postby Chem_Mod » Thu Jan 10, 2019 9:09 pm

For 1, you can use concentration in the calculation
For 2, if water is, for example, in the gas phase in the reaction

Mindy Kim 4C
Posts: 65
Joined: Fri Sep 28, 2018 12:25 am

Re: calculation of equilibrium constant

Postby Mindy Kim 4C » Thu Jan 10, 2019 10:20 pm

Question 1:
If the question gives the amount of gases as partial pressures you can convert to concentration. You can use the ideal gas law (PV=nRT) to convert partial pressures of gases to concentrations if you have both phases in the reaction. Remember that P=(n/V)RT, or concentration=P/RT.


Return to “Equilibrium Constants & Calculating Concentrations”

Who is online

Users browsing this forum: No registered users and 1 guest