## calculation of equilibrium constant

505166714
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### calculation of equilibrium constant

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
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### Re: calculation of equilibrium constant

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

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.