Chapter 15, Problem 9SAQ

The decomposition of NH₄HS is endothermic:

   ${\text{NH}}_{\text{4}}\text{HS}\left(s\right)\rightleftharpoons {\text{NH}}_{\text{3}}\left(\text{g}\right)+{\text{H}}_{\text{2}}\text{S}\left(\text{g}\right)$

Which change to an equilibrium mixture of this reaction results in the formation of more H₂S?

• an increase in the amount of NH₄HS in the reaction vessel
• an increase in temperature
• a decrease in the volume of the reaction vessel (at constant temperature)
• all of the above