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Topic: Equilibrium problem please help me!!  (Read 4408 times)

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Offline BJB

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Equilibrium problem please help me!!
« on: June 02, 2010, 06:16:29 PM »
Hi every one ;) ,,
I hope all of you are fine 8).
ok. let us start ::)

Q ???: At equilibrium, the pressure of the reaction mixture
    CaCO3(s)   ::equil::  CaO(s)  +  CO2(g)
    is 0.105 atm at 350C. Calculate Kp & Kc for this reaction.


THE END :-*

Offline OrganicSynthesis

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Re: Equilibrium problem please help me!!
« Reply #1 on: June 02, 2010, 07:40:19 PM »
What is the expression for Kc and Kp for the reaction?

Offline 19kevin87

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Re: Equilibrium problem please help me!!
« Reply #2 on: June 04, 2010, 01:33:39 AM »
Not sure whether it's correct or not..

Kp = PCO2
therefore Kp = 0.105 atm

Kc = [CO2]
since only the pressure is provided, use the formula:
PV = nRT
n/V = P/RT
times MW of CO2 on both side you'll get:

nxMW / V = P/RT
and since nxMW/V = concentration of CO2
therefore Kc = P/RT

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