Chapter 12, Problem 12.93PAE

The decomposition of ${\text{NH}}_{\text{4}}\text{HS}$ ,

   ${\text{NH}}_{\text{4}}\text{HS}\left(s\right)\rightleftarrows {\text{NH}}_3\left(g\right)+{\text{H}}_{\text{2}}\text{S}\left(g\right)$

is an endothermic process. Using Le principle, explain how increasing the temperature would affect the equilibrium. If more ${\text{NH}}_{\text{4}}\text{HS}$ is added to a flask in which this equilibrium exists, how is the equilibrium affected? What if some additional ${\text{NH}}_3$ is placed in the flask? What will happen to the pressure of ${\text{NH}}_3$ if some ${\text{H}}_{\text{2}}\text{S}$ is removed from the flask?