Hydrogen iodide can decompose into hydrogen and iodine gases. 2 hi(g) h2(g) + 12(g) kp for the reaction is 0.016. if 0.350 atm of hi(g) is sealed in a flask, what is the total pressure of the system when equilibrium is established? a. 0.385 atm b. 0.350 atm c. 0.279 atm d. 0.258 atm e. 0.412 atm

Answer : The total pressure at equilibrium is 0.350 atm

Solution :  Given,

Initial pressure of = 0.350 bar

= 0.016

The given equilibrium reaction is,

Initially                  0.350           0       0

At equilibrium       (0.350-2x)    x       x

The total pressure at equilibrium =

Thus, the total pressure at equilibrium is 0.350 atm

c, liquids evaporate, creating a gas