Calculating equilibrium constants Keq

AI Thread Summary
The discussion revolves around calculating the concentration of Cl2 gas in a chemical equilibrium involving iron and chlorine. The equilibrium constant (Keq) is provided as 53.25, but participants express confusion about how to derive the concentration of Cl2 from this information. It is clarified that without additional data, such as the volume of the container, it is impossible to calculate the moles or concentration of Cl2 accurately. The focus remains on the need for more information to solve the problem effectively. Overall, the thread emphasizes the limitations of the given data in determining the desired concentration.
Dave1212
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Homework Statement


2Fe(s) + 3Cl2(g) ⇔ 2FeCl3(s)[/B]
Keq = 53.25 [CL2(g)] = ?M
Answer = [0.2658M]

Homework Equations


Keq = (cC)(dD)/(aA)(bB)

The Attempt at a Solution



Keq = [Cl2]3

53.25 = (Cl2)3

I’m confused because I feel like I need more to work with in this question. It seems like I need another number and I don’t know where to start on it.

Thanks in advance!
 
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What are you trying to calculate? Thread subject says "calculating equilibrium constants" yet Keq is given.
 
Borek said:
What are you trying to calculate? Thread subject says "calculating equilibrium constants" yet Keq is given.

Trying to calculate the Moles for Cl2
 
Not enough information. Can you quote entire question?
 
You can't calculate "moles of Cl2". You have two solids and a gas in equilibrium. At any temperature, there is an equilibrium pressure for the gas. That's all you know, unless you have a volume for the container, and can calculate the total amount of gas.
 
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