Question

At 964 oC the equilibrium constant for the reaction:
2 HI(g) H2(g) + I2(g) is KP = 8.47e-10. If the initial pressure ofHI is 2.92e-03 atm, calculate the equilibrium partial pressures ofHI, H2, and I2. Pick the choice which gives the correct value forthe equilibrium partial pressure of one of these gases.

a) PH2(eq) = 2.13e-08 atm
b) PH2(eq) = 2.55e-07 atm
c) PI2(eq) = 2.55e-07 atm
d) PI2(eq) = 8.50e-08 atm
e) PHI(eq) = 1.70e-07 atm