Write the pressure equilibrium constant expression for this reaction.

Question

Chlorine and water react to form hydrogen chloride and oxygen, like this:

2Cl₂(g)+2H₂O(g)→4HCl(g)+O₂(g)

Write the pressure equilibrium constant expression for this reaction. 

Answer 1

2Cl₂(g) + 2H₂O(g) ==> 4HCl(g) + O₂(g) .. balanced equation

K_p = (HCl)⁴(O₂) / (Cl₂)2(H₂O)² where (..) is partial pressure of each gas