For the equilibrium:

Question

NH4HS(s) ⇌ NH3(g) + H2S(g) How does Kp compare to Kc?

Kp > Kc

Kp = (Kc)1/2

Kp < Kc

Kp = (Kc)2

Kp = Kc

Answer 1

Kp = Kc(RT)^delta n where delta n = moles products - mols reactants
Look up Kp or Kc on the web and calculate the other, then compare Kp with Kc.