Chapter 15, Problem 8SAQ

The decomposition of ${\text{NH}}_{\text{4}}\text{HS}$ is endothermic.

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

Which change to an equilibrium mixture of this reaction results in the formation of more ${\text{H}}_{\text{2}}\text{S}$

?

a. a decrease in the volume of the reaction vessel (at constant temperature)

b. an increase in the amount of ${\text{NH}}_{\text{3}}$ in the reaction vessel

c. an increase in temperature

d. all of the above