Author Topic: Chemistry As level CIE Equilibra question?  (Read 687 times)

Offline lxxxphysixxxl

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Chemistry As level CIE Equilibra question?
« on: May 29, 2010, 10:48:06 am »
Hey

i was thinking about your KP and KC expressions.

And please correct me if Im wrong but i think it is

liquids, aqueous and gases that are compatible with Kp expressions. And only liquids and aqueouses are compatible in Kc expressions.

Please let me know which physical states are compatible with which expressions?

Offline CHEMMASTER6000

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Re: Chemistry As level CIE Equilibra question?
« Reply #1 on: May 29, 2010, 11:42:27 am »
everything should be compatible with both except solids. technically gas is can be considered a concentration . however it is very unlikelly for a gas to be given in a kc question

Offline Chingoo

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Re: Chemistry As level CIE Equilibra question?
« Reply #2 on: May 29, 2010, 12:20:39 pm »
Kp cannot be compatible for any state except gaseous because instead of the concentration in moldm-3 of the reactants and products, it is the measure of the partial pressure of a gas in a mixture of gases. Kc can be used for any state of matter as every state of matter has moles.
All that is on earth will perish:
But will abide (forever) the Face of thy Lord--full of Majesty, Bounty & Honor.
Then which of the favors of your Lord will ye deny?


Qura'n, Chapter 55: The Beneficent, Verses 26-28

Offline CHEMMASTER6000

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Re: Chemistry As level CIE Equilibra question?
« Reply #3 on: May 29, 2010, 12:45:13 pm »
to chingoo oh but not solid. ho would you measire the concentration of solid

Offline lxxxphysixxxl

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Re: Chemistry As level CIE Equilibra question?
« Reply #4 on: May 29, 2010, 02:31:48 pm »
hey

ok so to my understanding Kp can be only be used with gas

and kc can be used with aqueous and liquid.


Thanks guys

Plz correct me if im wrong again.