Question

2) For the chemical reaction CO2(g) + H2O(0) $ H2CO3(aq) give the correct expression for Kc, Kp, and K, or explain why such an expression cannot be given. [12 points)

Answer 1

+ Given, chemical reaction involving equilibria + H₂ u H₂ coz lag. ) * We cannot write equilibrium constant expression live product to reactant ratio) for involving only in terms of concentrations and in terms of pressure only, because one of the species ine co, is in gaseous state so that we can express it in terms of pressur while one species is in aqueous state ire H₂CO₃ (a weak acid) , so that we can define its concentration. Hence, we cannot have an expression for kp & kc get equilibrium constant expression by combining both [H₂ coz Jaq. (We are not incluiting H₂Oce) because in pure state ) but k = P coago it is