NH4HS(s) ⇌ NH3(g) + H2S(g) The equilibrium pressure at 25 degree C is 0.660 atm. What is Kp for the reaction? NH4HS(s) ⇌ NH3(g) + H2S(g) The equilibrium pressure at 25 degree C is 0.660 atm. What is Kp for the reaction? November 11, 2020 Category: Chapter 5 - Chemical Equilibrium (Level 1 and Level 2) , N Awasthi Physical Chemistry , Facebook Messenger WhatsApp Share this:TwitterFacebook Related