[Ann1234]

Hello all!

I have this problem that is driving me crazy =(

one mole of N2 and 3 mole of H2 are placed in a flask at 375C. calculate the total pressure of the system at equilibrium if the mole fraction of NH3 IS 0.21.

kP = 4.31E-4.

N2 + 3H2 = 2NH3
Can someone help? so far i use the formula Partial pressure NH3 = XNH3. Total pressure
from that I need to get partial pressure of NH3- with the molar fraction and the total moles at equilibrium I solved for x and got the moles of NH3 but still I think I need the volume of the flask which I don't have it=please *delete me*

[Borek]

Looks to me like question is incomplete. You can answer it in terms of "final pressure is x times initial pressure", but there is no way to give an absolute answer.