NH4HS(s )<=>NH3(g)+ H2S(g) ∆H = +93 kilojoues

Question

The equilibrium,above is established by placing solid NH4HS in an evacuated container at 25degreesC. At equilibrium, some solid NH4HS remains in the container. Predict and explain the following.

The effect on the equilibrium partial presure of NH3 gas when additional gas H2S is introduced into the container

Answer 1

if you add H2S, increasing its concentration, the reaction will go to the left to reduce the H2S concentration.