calculation of equilibrium constant

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505166714
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Joined: Thu Sep 27, 2018 11:17 pm

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
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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: 52
Joined: Thu Sep 27, 2018 11:25 pm

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.


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