The equilibrium constant, Kp , for the reaction
H2(g) + I2(g) ↔ 2HI(g)
is 55.2 at 425°C. A rigid cylinder at that temperature contains 0.127 atm of hydrogen, 0.134 atm of iodine, and 1.055 atm of hydrogen iodide.
1. Explain is the system at equilibrium?
2. Determine the equilibrium concentrations of all species in reaction.