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Equilibrium calculation help?

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1. Under different conditions, 40% of the moles present at equilibrium is N2O4.

If the total pressure of the system is 2.0 atm. The numerical value of the equilibrium constant Kp is ????
2. (Original post by Hazel99)
Under different conditions, 40% of the moles present at equilibrium is N2O4.

If the total pressure of the system is 2.0 atm. The numerical value of the equilibrium constant Kp is ????
partial pressure = mole fraction x total pressure
3. (Original post by charco)
partial pressure = mole fraction x total pressure
Kp= 0.40*2.0?
Is 2.0 atm = just 2?
4. (Original post by Hazel99)
Kp= 0.40*2.0?
Is 2.0 atm = just 2?
You have to work out the partial pressure of each component

Then apply the equilibrium law ...

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