Chapter 12, Problem 66QAP

Consider the equilibrium

${\text{H}}_2\left(g\right)+\text{S}\left(s\right)\rightleftharpoons {\text{H}}_2\text{S}\left(g\right)$When this system is at equilibrium at 25°C in a 2.00-L container, 0.120 mol of H₂, 0.034 mol of H₂S, and 0.4000 mol of S are present. When the temperature is increased to 35°C, the partial pressure of H₂ increases to 1.56 atm.

(a) What is K for the reaction at 25°C?

(b) What is K for the reaction at 35°C?