P(k) and P(q)

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Simon Dionson 4I
Posts: 107
Joined: Sat Sep 14, 2019 12:17 am

P(k) and P(q)

Postby Simon Dionson 4I » Tue Jan 07, 2020 7:16 pm

If we were calculating a reaction with multiple phases (i.e. solid, liquid, aqueous, gas), will calculating P(q) and P(k) only deal with the gases?

Asha Agarwal 1E
Posts: 51
Joined: Fri Aug 30, 2019 12:16 am

Re: P(k) and P(q)

Postby Asha Agarwal 1E » Tue Jan 07, 2020 7:56 pm

When calculating K(p) and Q(p), solids and liquids(solvents) are not included but both aqueous species and gases are included.

Ashley Tran 2I
Posts: 108
Joined: Thu Jul 11, 2019 12:17 am

Re: P(k) and P(q)

Postby Ashley Tran 2I » Tue Jan 07, 2020 9:36 pm

To clarify for both Q (initial conditions) and K (equilibrium conditions): when the compounds are gases use P for partial pressure and when the compounds are in aqueous state use the concentration (brackets). Disregard compounds in solid or liquid phase. Don't use partial pressure and concentration in the same Q/K expression... I don't think we're ever given problems like that.

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