Kp for heterogeneous Equilibria (with (l))

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The discussion focuses on the existence and relationship of Kp and Kc in heterogeneous equilibria, particularly in reactions involving liquids and aqueous states. There is confusion regarding whether Kp can be defined when reactants or products are in liquid or aqueous forms, as some sources suggest it does not exist in these cases. The Law of Mass Action indicates Kp is calculated using gaseous moles, but the role of activities and ideal behavior complicates the issue. Participants seek clarification on whether Kp can be applied to such reactions and if Kc exists for the HCl dissociation reaction. The conversation highlights the need for a clear understanding of equilibrium constants in different states of matter.
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Homework Statement


3Cu(s) + 2NO3-(aq) + 8H+(aq) ⇔3Cu2+(aq) + 2NO(g) + 4H2O(l)
Kp and Kc relationship? does Kp exist?
or HCl(g)⇔H+(aq)+Cl-(aq)

Homework Equations


Law of mass action, Kp=Kc(RT)Δng

The Attempt at a Solution


In lots of places contradictory results are there, some say that in Kp , (not clearly signifying presence of liquid state) that just take gaseous moles, and in some, Kp doesn't exist..we know that solvent and solid state can be ignored in all K .. Does Kp exist for a reaction including a reactant/product in aqueous or liquid form? (im not asking about thermodynamical constant which is quite crystal clear in definition by acivity)
 
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ELiT.Maxwell said:
Does Kp exist for a reaction including a reactant/product in aqueous or liquid form? (im not asking about thermodynamical constant which is quite crystal clear in definition by acivity)
Can you write activities of reactants and products as functions of P (fugacity)?
 
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if we assume ideal behaviour and remove concept of activity (by taking the measurement of species in bar and M) ..
a simple answer in yes or no would suffice... and 2nd part of question was whether Kc of Hcl reaction exists too
[sorry for my lack of knowledge in chemistry in general, that's why I am going back to strengthen my roots]
 
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