The equilibrium constant, Kp for the following reaction is 55.6 at 698 K: H2(g)+12(g) 2 HI(g) Calculate the equilibrium partial pressures of all species when H2 and I2, cach at an intitial partial pressure of 1.20 atm, are introduced into an evacuated vessel at 698 K. atm atm atm H2 PHI =