Kp = 0.0198 at 721 K for the reaction. The partial pressure of HI is ___atm.? (See below)?

Question

Please include the working towards the correct response. Thank you.

Kp = 0.0198 at 721 K for the reaction

In a particular experiment, the partial pressures of H2 and I2 at equilibrium are 0.710 and 0.888 atm, respectively. The partial pressure of HI is __________ atm.

a. 7.87
b. 1.98
c. 5.64
d. 0.125
e. 0.389

Answer 1

The partial pressure of HI squared is 0.71x0.888/Kp.

So if you now take the square root of that, you get answer... C.

Answer 2

At equilibrium the partial pressures of the hydrogen and iodine gases blended may be equivalent to 18 atm pondering that's the partial presure of the hi at equilibrium. initially the strain of the H2 is 15/25 or 3/5 of the finished partial stress, so the H2 may be 3/5 or 0.6 x 18 = 10.8 atm and the partial stress of the I2 at equilibrium may be 0.4 x 18 = 7.2 atm