13.4 Exercise 27

Assume that the change in pressure of H₂S is small enough to be neglected in the following problem.

(a) Calculate the equilibrium pressures of all species in an equilibrium mixture that results from the decomposition of H₂S with an initial pressure of 0.824 atm.

$2 \text{H}_{2} \text{S} \left(g\right) \rightleftharpoons 2 \text{H}_{2} \left(g\right) + \text{S}_{2} \left(g\right) K_{P} = 2.2 \times 10^{−6}$

(b) Confirm that the change is small enough to be neglected.